Top 15 Best Penetrating oils in 2020

Top 15 Best Penetrating Oil – Guide and Reviews 2020

Penetrating oils, also known as penetrating fluids, are petroleum-based lubricants with low viscosity. As the name suggests, it penetrates narrow spaces between threads of two parts. They are typically used to help with removing nuts and bolts as they flow easily when applied. It can also be used for home, cars, and industrial plant functions. Penetrating oils work by leaving a thin oil film in an object’s surface pores and then displacing other materials. Its low viscosity, together with the surface tension it provides, makes it ideal for penetrating into small cracks. Due to its volatile nature (it evaporates quickly and leaves small residues), it isn’t advisable for use as a general-purpose lubricant.

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Lower alkyl benzenes, alkyl succinic acid, dialky thiophsphate, lower alkanols, tert-dibutyl-p-cresol, polymethacryalate, and methyl silicone in a stock of paraffin bright stock lube oil are usually what penetrating oils are made out of. The alkanol component in penetrating oils is usually added as methanol or propanol (lower Top 15 Best Penetrating oils in 2020alcohol variants). A ratio of 5 to 1 of isopropanol and methanol is usually how alkanol components are made for economy and tax reasons. A blend of natural paraffin oils, on the other hand, is used to create the bright oil base. This blend is usually treated beforehand for low- and high-viscosity lubricant use, just like the ones that you’ll find in commercial transmission oils. The antioxidants and reducing agents, on the other hand, are commonly added to lubricants for cars. The amount of antioxidants and reducing agents may vary in amount when used in penetrating oils as they are usually just added after the recited range in order. Because of this, the antioxidants and reducing agents’ chemical reactions are either reduced or loosened – letting the car parts be freed easily without requiring much force.

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Advantages and benefits of penetrating oils

Cleans surfaces

Most penetrating oils in the market today are capable of cleaning surfaces from dripped varnish, spray paints, tars, grease, permanent markers, chewing gums, and a lot more. They are actually quite good for cleaning and preventing corrosion.

Lubricates and removes rust

Penetrating oils’ active ingredients usually have two functions – penetrating and lubricating, and softening and removing rust. For car enthusiasts, penetrating oils are mainly used for loosening stuck mechanical parts caused by rust, corrosion, etc. Penetrating oils easily penetrate small gaps, so applying them on the affected area softens and/or dissolves rust that causes the parts to be stuck. After this, the lubricating oil ingredient creeps through to supplement smooth turn or action.Top 15 Best Penetrating oils in 2020

Serves as a protective coating against moisture

Penetrating oils are known to have a secondary function – leaving a penetrative film. Basically, it leaves a thin film of coating after the rustic parts of a car have been lubricated. This thin film drives away moisture – the main reason for rust formation.  The penetrative film also prevents future rust/corrosion to keep your car’s engine in good shape. It is important, though, that the penetrating oil used has the right viscosity as it defeats its sole purpose if it has the wrong viscosity.

Silences noisy parts

Penetrating oils can help out with noise, like noisy suspensions and squeaky door hinges. It works by reducing friction and heat to reduce the noise between any noisy parts. Just keep in mind that it’s better to make sure if it is suitable to the surface you’re looking to apply it to before getting to work.

Increases work efficiency

Penetrating oils, with the advantages and benefits mentioned above, obviously makes your job a lot easier compared to just using your muscles to remove rusts.

Types of penetrating oils

Water-soluble oils

Water-soluble oils have a high dilution and a low concentration and are made up fluids with high water content. They usually have a concentration percentage of 10% upwards and are sold in a diluted version, so if there is no need for something really tough, water-soluble oils are the way to go. One of their advantages is that they can be used on some materials that could otherwise get damaged with other types of penetrating oils. On the downside, because they have high water content, they tend to evaporate much more quickly, meaning that they aren’t what you’d want to choose if you need lubrication.

Straight penetrating oilsTop 15 Best Penetrating oils in 2020

Straight penetrating oils are the most commonly used penetrating oil as they can be used on all sorts of mechanical applications. Also known as all-around mechanical oils, straight penetrating oils are typically applied without dilution. They are generally made from fats or extreme dispersion additives like sulfur, chlorine, and phosphorous, and base mineral lubricants using esters. It still has water content, though, for the purpose of lowering their flammability rate. They usually work really fast, too, as they are capable of flowing through rather narrow parts, cleaning them out with ease.

Micro-dispersant penetrating oils

Micro-dispersant penetrating oils contain mineral oils with suspended solid lubricants on top like graphite, boron nitride, and polytetrafluoroethylene. This type of penetrating oil has a very high flame resistance so you won’t have to worry about it igniting when applied on hot surfaces. Micro-dispersant penetrating oils can also be used as a lubricant as they take longer to evaporate.

Synthetic and semi-synthetic penetrating oils

As the name suggests, synthetic and semi-synthetic penetrating oils are made up of synthetic compounds such as esters, diesters, silicone, polyglycol, etc. These synthetic compounds stick to objects much longer. It offers a high level of performance and fire resistance, and is really helpful when you are dealing with moving parts that require some lubricant.

Features of high-quality penetrating oilsTop 15 Best Penetrating oils in 2020

Low viscosity

The best penetrating oils have a lower viscosity level in order to penetrate deeper into joints or surfaces. Using a penetrating oil with a higher viscosity level just increases the chance of further damaging stuck components.

Lubricity

A penetrating oil’s lubricating capabilities come in handy as it helps avoid the issues that you fixed from occurring again in the future. High-quality penetrating oils do not just penetrate down into the thread and remove the rust – they also leave behind a thin film of liquid to help reduce the chances of future rusting and corrosion and to stimulate smooth motion.

Easy and simple to use

Penetrating oils that are easy and simple to use makes any job straightforward. Some easy-to-use penetrating oils come in spray type or with a small tube – making precise application easier. Precise application is very useful and important especially if you are trying to access a tight area or if you are trying to get to hard-to-reach places.

Makes use of green material and is environmentally friendly

The use of green material and how environmentally friendly a product is is becoming an important concern to responsible buyers. When it comes to penetrating oils, it means that they should not emit volatile organic compounds as to not harm the ozone layer.

FAQs

What are penetrating oils used for?

Penetrating oils have many uses, with the most common ones being lubricating and/or loosening stuck parts, cleaning and preventing rust or corrosion, and silencing noisy parts.

How do penetrating oils work?Top 15 Best Penetrating oils in 2020

They creep into and penetrate through small gaps in threads and bearings, then leave a thin film of oil that is responsible for displacing rust, moisture, and other debris as they pass through surfaces.

Are penetrating oils flammable?

As they have low flashpoints, a lot of penetrating oils have a high flammability rating. With this, you should be careful in handling them, like not using them in enclosed environments or around any flames.

Can penetrating oils prevent rust?

Penetrating oils are not to be used solely for preventing rust. Modern ones, however, have been efficiently reformulated so that they could slightly remove rust. Rust removers are still the way to go if you are looking to remove rusts alone.

Top 15 Best Penetrating oils in 2020

ImageProduct NameKey FeaturesRating
1. Kano Aerokroil Penetrating Oil Handle wide range of surfaces4.7

2. Castle Thrust Penetrating Oil

Resists high temperatures4.6
3.Kano Kroil Penetrating Oil No expiration date 4.6
4. Liquid Wrench L116 Penetrating Oil Frees stuck nuts, bolts, and locks4.5
5. Royal Purple Maxfilm Penetrating Oil Preserving and protecting against rust and corrosion 4.5
6. Lubriplate Chain & Cable Fluid Penetrating Oil Capacity Wt. – 12 oz4.4
7. CRC Knock’er Loose Solvent Penetrating Oil Volatile organic compounds (VOC) compliant 4.4
8. Gasoila Free All Penetrating Oil Contains no silicones4.4
9. CRC Knock’er Loose Plus Solvent Penetrating Oil 360 degree spray value4.3
10. B’laster 8-PB Penetrating Oil True penetrant4.3
11. Briggs & Stratton 100070 Penetrating Oil 11-ounce penetrating oil 4.2
12. Loctite 37585 Penetrating Oil No ozone-depleting compounds4.1
13. Cyclo Break Away Penetrating Oil Breaks loose rusted joints & bolts 4.1
14. CRC Screw Loose Penetrating Oil Doesn’t evaporate4.0
15. Liquid Wrench L104 Penetrating Oil Low odor, 0% VOC3.9

1. Kano Aerokroil Penetrating Oil

Kano Laboratories is known for industrial specialty chemicals like lubricants, cleaner products, penetrating oils, Kano Aerokroil Penetrating Oiletc. Kroil is their largest selling product, having been sold directly to the industry since 1939. They pride themselves on Kroil being used by 480 of the Fortune 500 companies.

Penetration quality

The Kano Aerokroil penetrating oil offers premium rust preventive features. With low viscosity, it is capable of penetrating tight spaces quickly. It also loosens metal joints, rusted bolts, and frozen metal parts in minutes. Its proprietary and unique molecular architecture produces a molecular affinity to metal, making it very efficient to use as it guarantees swift penetration and can creep into the millionth inch of spaces to break the bond caused by contamination, compression, rusting, or corrosion. Frozen metal parts, on the other hand, are lubricated to loosen them.

Versatility

The Kano Aerokroil penetrating oil can safely be used on a wide range of materials, including metal, plastics, rubber, and painted surfaces. This penetrating oil is capable of dissolving gum, dried grease, and oil without affecting any metal, plastic, rubber, and other surfaces it comes in contact with. By displacing moisture on applied surfaces to stop corrosion, it is considered to be one of the penetrating oils that’s best for carbon deposits. It can also be used on autos, mowers, tractors, and guns. Because dealing with stuck bolts and screws is easy for Aerokroil, it can do any job of that sort without any problem. Using it to clean guns and deal with firearms is the best, too, as it quickly and fiercely works on the stuck and rusted pieces. It can also be used on a camera’s frozen fittings and aluminum and brass threads.

Other features

The Kano Aerokroil penetrating oil makes use of a nozzle for convenience. It does, however, contain petroleum and can damage stuff affected by petroleum. The Kano Aerokroil is backed by a hassle-free refund – if it does not loosen frozen metal parts, you can claim a full refund.

Pros

  • Does not expire
  • Has a nozzle for easy application
  • Can handle a wide range of surfaces, equipment, hardware, and tools – works in minutes and excellently prevents rust
  • Quickly loosens rusted or stuck nuts, joints, and bolts; dissolves grease and rust; frees frozen pulleys and shafts

Cons

  • Although it can be used on a wide range of materials, its petroleum base may not be safe for some

2. Castle Thrust Penetrating Oil

Castle, a product line from Finger Lakes, is based in New York and was founded in 1970. They are known for their Castle Thrust Penetrating Oilprofessional car cleaning products, but they also offer a variety of automotive products such as waxes, degreasers, additives, flushes, and a lot more. They even offer cleaners and janitorial products and certain services on location for maintenance.

Penetration quality

The Castle Thrust penetrating oil is ion-activated and has a superior affinity for metal, enabling it to deeply and quickly penetrate surfaces and to give an overall powerful performance. With Castle’s special blend of lubricants, constant lubrication and high temperature breakdown resistance are assured. It also has a foaming effect which plays a part in keeping the penetrating oil’s low viscosity. In other words, it is for minimized runoff and to keep more of it working on the rusted part without burning off.

Versatility

The Castle Thrust penetrating oil may be used in autos, marine, manufacturing, lawn equipment, buses, trucks, heavy machineries, home, and RVs. Small spaces are not a problem with the Castle Thrust as it can penetrate through them in order to loosen up stuck nuts and bolts. It also serves as a lubricant and prevents rust and corrosion when it gets to the surface.

Other features

The Castle Thrust penetrating oil comes in an aerosol can for ease of use. It is petroleum-based.

Pros

  • Resists high temperatures
  • Is convenient and easy to use as it comes in an aerosol can
  • Can be used in a wide range of applications
  • Foams on contact with metal – prevents oil runoffs and helps the oil stay in place (rusted part) without burning off
  • Superior affinity to metal and has a unique ion-activated formula
  • Works great as a lubricant

Cons

  • Is made from petroleum-based oil
  • Has a strong odor

3. Kano Kroil Penetrating Oil

Kano Laboratories is known for industrial specialty chemicals like lubricants, cleaner products, penetrating oils, Kano Kroil Penetrating Oiletc. Kroil is their largest selling product, having been sold directly to the industry since 1939. They pride themselves on Kroil being used by 480 of the Fortune 500 companies.

Penetration quality

The Kano Kroil penetrating oil is Kano’s original oil that came in an aerosol can. With itsunique molecular structure, it is capable of breaking bonds on the metal’s first molecular level. It also createds an affinity to metal for quick penetration and is able to loosen strongly stuck metal parts. With its very low viscosity, penetrating small spaces is a breeze – making it the go-to penetrating oil for any rusty metal issues. Its very low viscosity, however, means less lubricity. While it is able to lubricate, it works better as a penetrating oil. The Kano Kroil has been tested by many to loosen frozen metal parts and joints in just a matter of minutes – saving you labor and equipment.

Versatility

The Kano Kroil penetrating oil can be used both commercially and at home. It is pretty versatile, making it a handy product for mechanics working on rusted car parts. It can also clean hardware tools and materials easily. The Kano Kroil is also used by farmers to keep their machinery in top shape – lubricating old tractor parts and preventing machines from rusting. For residential use, on the other hand, it is useful in cleaning gardening tools and loosening objects that are stuck together, whether it be caused by freezing or rust. It can also be used on door hinges to lubricate them and minimize squeaking.

Other features

The Kano Kroil penetrating oil features a spout that makes precise application easier – ensuring that not a single drop is put to waste. This spout is also helpful when you need to get into hard to reach areas. Kano takes pride in this product and guarantees customers of it loosening frozen metal parts, and if it doesn’t, a full refund is claimable.

Pros

  • Has a spout for precise application; two drops is more than enough for a large area of metal rust
  • Can be used on a wide range of surfaces including metal, rubber, plastic, etc. without damaging them
  • Will last long as it doesn’t expire nor harden
  • Doesn’t have a strong odor so it can be used in enclose paces

Cons

  • Hard to clean up after spillage
  • The nozzle may distribute too much product
  • Contains petroleum oil

4. Liquid Wrench L116 Penetrating Oil

Liquid Wrench is a family-owned business based in Charlotte, NC that has been around for more than 75 years. Liquid Wrench L116 Penetrating OilWith their products being developed by people who actually use them and the use of industrial-strength formulas, they have earned the trust of active DIYers, hard-working tradesmen, and professionals, thanks to their superior and consistent performance. Their products are aimed at automotive and industrial professionals.

Penetration quality

The Liquid Wrench L116 penetrating oil makes use of a thin and very powerful anti-seize formula that helps it dissolve rust quickly, cut through grease, and penetrate the tightest gaps. It frees stuck nuts, locks, and bolts in no time. Because it contains a polymer called Cerflon, it has superior durability and lubricity – helping extend the service life of the metal parts you used it on.

Versatility

The Liquid Wrench L116 penetrating oil may be used on stuck or rusty nuts, bolts, hinges, and locks. It may also be used on clamps and pipe fittings, latches, nozzles, hose pipe fittings, and frozen mechanisms.

Other features

The Liquid Wrench L116 penetrating oil has a low-odor design for comfortable use in prolonged periods of time. It comes with a precision tip in the form of a nozzle for easy application in tight spaces. It contains 0% VOC and is safe to use on painted surfaces, plastics, and PCVs. It also is 50-state compliant.

Pros

  • Aside from penetrating gaps and dissolving rust, it also cuts through and removes grease
  • High solvency and lubrication performance
  • Versatile; can be used on nuts, bolts, clamps, latches, locks, pipes, fittings, etc.
  • Safe to use on plastic and painted surfaces

Cons

  • Takes time (like a day or more) to do its work

5. Royal Purple Maxfilm Penetrating Oil

Royal Purple, a company based in Porter, Texas, designs and manufactures a wide range of high-quality and high-Royal Purple Maxfilm Penetrating Oilperformance lubricants that cater to customers from regular consumers to industrial ones. With more than 200 years of expertise starting from its founder, Royal Purple has gained the trust of many. They focus on developing state-of-the-art lubricants and have made it their mission to manufacture products that outperform other mineral-based and synthetic oils.

Penetration quality

The Royal Purple Maxfilm penetrating oil is a multipurpose synthetic lubricant and penetrant with a high film strength. It effectively cleans and loosens rusted parts as it can deeply penetrate them. Its solvent carrier quickly evaporates once it’s applied, then leaves a strong, thixotropic lubricating film on all metal surfaces – leaving it protected against rust, corrosion, and wear for a long time. Because it contains Royal Purple’s exclusive Synerlec additive technology, it makes equipment run smoother for longer and more efficiently while keeping them cool and quiet. It also uses a non-petroleum propellant and displaces moisture.

Versatility

The Royal Purple Maxfilm penetrating oil works well in a wide array of applications. It is designed for loosening stuck parts such as bolts, locks, nuts, hinges, etc. It also keeps power tools, chains, open gears, rollers, hinges, lawn equipment, fishing tackles, etc., lubricated. In addition to that, the Royal Purple Maxfilm preserves and protects disassembled machinery parts, wire ropes, disassembled machinery parts, etc., against rust and corrosion. This penetrating oil may also be used as a manual cutting fluid to make metal cutting, tapping, hand drilling, etc., of steel and aluminum way easier.

Other features

The Royal Purple Maxfilm penetrating oil is available in two sizes: pail and aerosol 12 by 11oz.

Pros

  • Makes things feel and work like brand new
  • It works well on pretty much everything and truly penetrates deeply
  • Great at protecting bare metal surfaces especially in damp or humid conditions
  • Is a good lubricant

Cons

  • Runs out of aerosol before it runs out of oil, hence wasting oil

6. Lubriplate Chain & Cable Fluid Penetrating Oil

Lubriplate was founded back in 1870 and is headquartered in Newark, NJ. The company develops and Lubriplate Chain & Cable Fluid Penetrating Oilmanufactures a wide range of food-grade lubricants including household, recreational, automotive, marine, and industrial lubricants that are known for their quality and durability. They are committed to selling only the industrial lubricants that meet the highest of standards to meet and exceed their customers’ expectations. They care about the environment, too. They make use of formulas that would help reduce their carbon footprint and lessen their impact on the environment, all without sacrificing their products’ performance.

Penetration quality

The Lubriplate Chain & Cable Fluid penetrating oil is a cleansing, lubricating, and penetrating fluid in one can. When applied, instead of drying out surfaces, it leaves a unique, moist film that does not pick up dirt and dust – it acts as a cleansing agent. When used on wire ropes, roller chains, etc., it penetrates, cleanses, lubricates, and reduces friction to keep them in good shape. It is also protects bright work and is good at preventing rusts and corrosion. Its excellence in loosening rusty nuts and bolts makes it ideal for drilling and tapping.

Versatility

The Lubriplate Chain & Cable Fluid penetrating oil is designed for a number of applications. It works perfectly on wire ropes, hinges, springs, chains, slides, cables, and other moving metal parts. It is also suitable for heavy cables, medium- to large-sized roller chains, drive chains, and many other construction equipment.

Other features

The Lubriplate Chain & Cable Fluid penetrating oil, aside from its ability to penetrate and lubricate, also acts as a cleansing agent. It works by spraying and has a narrow straw-like attachment for precise application. It has a capacity weight of 12oz, a specific gravity of 0.93, and a flashpoint of 310 degrees Fahrenheit. The Chain & Cable fluid is petroleum-based.

Pros

  • Great at lubricating – keeps chains and cables’ smooth operation
  • Protects whatever it is applied to against rusting and stretching
  • Sticks in place and lasts for a long time

Cons

  • None

7. CRC Knock’er Loose Solvent Penetrating Oil

CRC started out in 1958 in a Pennsylvania garage with just one product, a multi-purpose lubricant called CRC Knock’er Loose Solvent Penetrating OilCorrosion Inhibitor. Today, CRC has over 1300 products with specialized formulas to meet the needs of different markets including automotive, heavy truck, marine, aviation, hardware, electrical, and aviation markets. The company is committed to the continuous improvement of its innovative products and excellent services, with the goal of delivering high-quality products according to their customers’ requirements. CRC is also all about ensuring cost-effective operations through reduced waste, improved productivity, and a hazard-free workplace.

Penetration quality

The CRC Knock’er Loose Solvent penetrating oil is a low viscosity lubricant and penetrant with an industrial strength. It is designed to loosen and free bound, seized, or frozen fasteners quicker than the competition. With its low surface tension formula, it is able to quickly permeate rust, grease, corrosion, scale, and gum as it easily creeps into seams, cracks, joints, and threads with great efficacy. It also makes the disassembly of plant machinery, equipment for emergency repairs and routine maintenance, and tools very easy. Loosening corroded and rusted bolts, nuts, and frozen components is a breeze with the Knock’er Loose Solvent penetrating oil. The lubricating residue it leaves also helps prevent corrosion. Its super penetrating formula has been tested independently for its penetration, lubrication, and corrosion performance and has been found to have outstanding performance.

Versatility

The CRC Knock’er Loose Solvent penetrating oil can be used in a wide range of applications including pins, screws, nuts and bolts, clips, hinges, bushings, locks, caps, snaps, lugs, washers, and sliding mechanisms. Its special formula makes dissolving rust, corrosion, varnishes, and gums really easy, all while improving their operating and performance efficiency.

Other features

The CRC Knock’er Loose Solvent penetrating oil has a low volatile organic compounds (VOC) formula and complies with all of VOC’s current regulations. It also complies with the Environmental Protection Agency’s (EPA) regulations regarding the use of ozone-depleting chemicals. It doesn’t contain any ozone-depleting chemicals but still offers excellent performance. The Knock’er Loose Solvent penetrating oil has a 360-degree valve, allowing for spraying from any position, even upside down.

Pros

  • Has a slippery and oily consistency that works great at loosening anything
  • Clings to whatever it’s applied to and doesn’t run off so quick
  • Is very versatile

Cons

  • Smells awful
  • Does not include a spray nozzle

8. Gasoila Free All Penetrating Oil

Gasoila, known as FedPro today, started out in Cleveland, Ohio with a hard-set thread sealant in 1915. Their Gasoila Free All Penetrating Oilmanufacturing process is still like some 100 years ago – in small batches. This is their way of making sure that their products meet or exceed their founders’ and customers’ high-quality standards. Their products, such as thread sealants, PTFE tapes, premium cleaners, and lubricants, have become the products of choice in several markets.

Penetration quality

The Gasoila Free All penetrating oil penetrates rust, corrosion, and scale and loosens up tar, grease, red and white lead, and carbon and graphite deposits that build up over time to free parts in an instant. With a rust-eating agent in its special formula, rust is not only penetrated but also loosened and dissolved; it also has its own thin lubricating film that acts as its own delivery agent. This agent evaporates slowly, is highly mobile, and is ultra-viscous – helping the oil lubricate things faster and farther, which means that before the solvent evaporates, a good amount of lubricant has already reached the scene. With the Gasoila Free All penetrating oil, you won’t have to use a torch, drill, hammer, or chisel anymore.

Versatility

The Gasoila Free All penetrating oil works perfectly in different applications like rusted machine screws and bolts and nuts, threaded pipe connections, pillow blocks, universal joints, clamps for tailpipes and mufflers, locks, etc. – loosening up rust and corrosion that may be present. The Free All is excellent for automotive, marine, plumbing, and general industrial applications. It also excels in releasing the corroded, threaded connections of ferrous metals.

Other features

The Gasoila Free All penetrating oil is silicone-free. This makes it safe to use in indoor environments, paint and shop environments, and a lot more. It has a flashpoint of 66 degrees Fahrenheit, a freezing point of 16 degrees Fahrenheit, and a specific gravity of 0.867 =/- 0.05.

Pros

  • Is silicone-free; can be used indoors
  • Penetrates and loosens things up instantly while also providing excellent rust protection
  • Is a great lubricant
  • Saves you a significant amount of time by sparing you the penetrating and rust breaking job

Cons

  • Sometimes requires several applications for it to work
  • Doesn’t seem to work as well with really old rust

9. CRC Knock’er Loose Plus Solvent Penetrating Oil

CRC started out in 1958 in a Pennsylvania garage with just one product, a multi-purpose lubricant called CRC Knock’er Loose Plus Solvent Penetrating OilCorrosion Inhibitor. Today, CRC has over 1300 products with specialized formulas to meet the needs of different markets including automotive, heavy truck, marine, aviation, hardware, electrical, and aviation markets. The company is committed to the continuous improvement of its innovative products and excellent services, with the goal of delivering high-quality products according to their customers’ requirements. CRC is also all about ensuring cost-effective operations through reduced waste, improved productivity, and a hazard-free workplace.

Penetration quality

The CRC Knock’er Loose Plus Solvent penetrating oil is an exceptional penetrant – immediately reducing the temperature of whatever area it comes in contact with. It has several amazing features; the freeze shock action, for one, lets it penetrate an area deeply by cracking rusted surfaces, hence working more effectively compared to other penetrants. It also permeates affected areas with a low surface tension formula that creeps into threads, seams, cracks, and joints efficiently.

Versatility

The CRC Knock’er Loose Plus Solvent penetrating oil is recommended for use on caps, locks, snaps, lugs, nuts, bolts, pins, screws, clips, bushings, washers, and sliding mechanisms. Its super penetrating formula works very well in all aspects – speed, penetration, and corrosion resistance.

Other features

The CRC Knock’er Loose Plus Solvent penetrating oil has a VOC-compliant formula and contains no (known) ozone-depleting chemicals – offering good performance while also complying with the EPA regulations on the use of ozone-depleting chemicals. It has a flashpoint of 126 degrees Fahrenheit and a specific gravity of 0.84.

Pros

  • Works like a charm and usually does not require multiple applications
  • Does its job quickly and successfully without damaging what you’re applying it to
  • Spray can always works evenly at any position or direction

Cons

  • Doesn’t actually “freeze” the area it has been applied to

10. B’laster 8-PB Penetrating Oil

B’laster started out in 1957 in Cleveland, Ohio – offering products born from professional applications to make B’laster 8-PB Penetrating Oilsure they’re of high quality. Their professional-grade products come from a place that requires the toughest solutions, helping them give their customers only the best. They have made it their mission to innovate and create products that actually work to make people’s lives easier and save them energy, time, money, and stress.

Penetration quality

The B’laster 8-PB penetrating oil is a popular penetrant with origins that can be traced back to 1957. It quickly loosens frozen or rusted parts with the use of the same legacy formula. This penetrating oil also contains a non-evaporating lubricant that protects areas against rust and corrosion. With the use of this powerful penetrating catalyst, working on rusted and frozen nuts, bolts, and threads becomes a struggle-free job. It ultimately slides down to areas that are hard to reach by quickly and deeply creeping into them. It then acts on surface tension rust and corrosion – attacking and stopping them. Once applied, it leaves a non-evaporating lubricating film that resists future rusting to save you time and money.

Versatility

The B’laster 8-PB penetrating oil is ideal for use on brakes, cars, machines with exhaust and suspension system jobs, corroded pipe threads, nuts, bolts, and basically anything stuck, frozen, rusted, or corroded. It is also suitable for industrial, automotive, marine, and plumbing applications.

Other features

The B’laster 8-PB penetrating oil makes use of the same legacy formula and now has the ability to monitor the dispensed volume with its Control Flow technology.

Pros

  • Lubricates moving parts and loosens everything by creeping into the tightest of gaps and spaces
  • Works effectively and quickly
  • Provides metals with corrosion resistance
  • Makes nuts and bolts a lot easier to remove

Cons

  • Doesn’t come with a nozzle/straw precision applicator – making applications quite challenging
  • Has a strong, lingering unpleasant smell

11. Briggs & Stratton 100070 Penetrating Oil

Briggs & Stratton is a company headquartered in Milwaukee, USA, and has over 110 years of experience. Millions Briggs & Stratton 100070 Penetrating Oilof people around the world trust them and their reliability as they are backed by one of the largest service networks in the industry. Aside from small engines, they have a wide range of care products to keep said engines at their peak performance.

Penetration quality

The Briggs & Stratton 100070 penetrating oil contains powerful, superfast, and concentrated penetrating solvent to lubricate and free things faster. It also displaces lubricants and moisture.

Versatility

The Briggs & Stratton 100070 penetrating oil works well on rusted nuts and bolts as well as other stuck metal parts.

Other features

The Briggs & Stratton 100070 penetrating oil is industrial-rated.

Pros

  • Suitable for a huge variety of metal parts and engines in general
  • Is industrial-rated
  • Loosens rusted areas while also displacing moisture

Cons

  • None

12. Loctite 37585 Penetrating Oil

Loctite was founded in 1956 and is known for its sealants, adhesives, and surface treatments like penetrating oils. Loctite 37585 Penetrating OilThrough innovation, intensive research and development, and with their breakthrough technology, the solutions that they provide truly deliver, and therefore provide stronger, longer-lasting, more durable, and overall more efficient products.

Penetration quality

The Loctite 37585 penetrating oil is a heavy-duty penetrant that works by cutting through and dissolving dirt, rust, and oil. When applied to an area, it seeps into pores and cracks fast while also getting rid of frozen joints (if any). After that, it acts as a lubricant – depositing an oily, thin coat that resists and displaces moisture and water all while reducing friction and facilitating metallic parts’ smooth movement. It also protects the area against rust and aids in the metal parts’ smooth movement, so you won’t have to worry about rusting and corrosion in the future.

Versatility

The Loctite 37585 penetrating oil, because it has lubricating abilities, is used for loosening nuts, bolts, pipe fittings, and studs fast and easy. It is also suitable for the assembly and dismounting of machinery and other components, freeing frozen bearings and sticky valves, loosening up conveyor belt drives and roller chains, and removing pressing of bearings and gears and pulleys.

Other features

The Loctite 37585 penetrating oil contains no harmful, toxic, and ozone-depleting compounds – making it safe to the ozone layer.

Pros

  • Powerful penetrating oil that loosens up tough, stuck parts
  • Is safe to the ozone layer as it contains no ozone-depleting compounds
  • Works fast
  • Overall fantastic product

Cons

  • None

13. Cyclo Break Away Penetrating Oil

Cyclo started out in 1959 and has since then been building a rich heritage of high-quality and professional Cyclo Break Away Penetrating Oilproducts. They are committed to delivering products that meet their customers’ demands and building long-lasting relationships with them by exceeding their expectations. Their staff thinks in an innovative way not only to solve problems but also to create new possibilities.

Penetration quality

The Cyclo Break Away penetrating oil is a penetrant and super lubricant with a pure oil blend. It works by reducing the coefficient of friction in hot or cold moving parts to break loose rusted bolts and joints. After freeing rusted and frozen parts, it leaves a thin, protective coating to fight further oxidation. This protective coating also provides additional lubrication to help control squeaks, rust, and corrosion. It doesn’t evaporate for long-lasting lubrication, too.

Versatility

The Cyclo Break Away penetrating oil is used by both DIYers and professional mechanics for rusted and corroded joints, nuts, bolts, and machinery. It also works well with guns, tools, hinges, sports equipment, etc.

Other features

The Cyclo Break Away penetrating oil contains mineral oil, petroleum distillates, hydro-treated heavy naphthenic, hydro-treated distillate, liquefied petroleum gas, and cyclohexanone. It contains no silicone and is NSF H2-certified and is VOC-compliant for all 50 states in the USA.

Pros

  • Works well with rusted and corroded parts – really breaks them down
  • Is VOC-compliant and NSF H2-certified
  • Is suitable for a wide range of applications

Cons

  • A bit too expensive

14. CRC Screw Loose Penetrating Oil

CRC started out in 1958 in a Pennsylvania garage with just one product, a multi-purpose lubricant called CRC Screw Loose Penetrating OilCorrosion Inhibitor. Today, CRC has over 1300 products with specialized formulas to meet the needs of different markets including automotive, heavy truck, marine, aviation, hardware, electrical, and aviation markets. The company is committed to the continuous improvement of its innovative products and excellent services, with the goal of delivering high-quality products according to their customers’ requirements. CRC is also all about ensuring cost-effective operations through reduced waste, improved productivity, and a hazard-free workplace.

Penetration quality

The CRC Screw Loose penetrating oil is a no-compromise penetrant that works by attacking rust and corrosion in order to free rusted and corroded fasteners and other mechanical components. It is a powerful, fast-acting, concentrated penetrating solvent that instantly penetrates tightly fitted crevices and loosens rust, scale, and corrosion. It allows for easy disassembly of mechanical equipment and fixtures. It also leaves a thin, non-drying film to protect whatever it’s applied to against further rust and corrosion.

Versatility

The CRC Screw Loose penetrating oil works well with nuts and bolts, screws, pins, clips, hinges, bushings, snaps, caps, lugs, locks, and washers and sliding mechanisms.

Other features

The CRC Screw Loose penetrating oil has a petroleum distillate base and is VOC-compliant and NSF H2-certified. It has a slow evaporation rate with a dielectric strength of 60000 volts. It has a flashpoint of 141 degrees Fahrenheit (61 degrees Celsius), a working temperature of 300 degrees Fahrenheit maximum, and is safe for use on plastic.

Pros

  • Its foaming feature seems to help it on staying on the surface for longer and penetrating better
  • Dissolves rust quickly and extremely well
  • Doesn’t evaporate

Cons

  • Doesn’t come with a nozzle precision applicator

15. Liquid Wrench L104 Penetrating Oil

Liquid Wrench is a family-owned business based in Charlotte, NC that has been around for more than 75 years. Liquid Wrench L104 Penetrating OilWith their products being developed by people who actually use them and the use of industrial-strength formulas, they have earned the trust of active DIYers, hard-working tradesmen, and professionals, thanks to their superior and consistent performance. Their products are aimed at automotive and industrial professionals.

Penetration quality

The Liquid Wrench L104 penetrating oil frees up stuck stuff like nuts, bolts, and locks quickly. With the help of its anti-seize formula, it penetrates rust and corrosion, loosens up rusted bolts and parts, and cuts through grease. It also utilizes Cerflon, a state of the art, solid lubricant to further enhance the anti-seize protection and long-lasting lubrication it provides.

Versatility

The Liquid Wrench L104 penetrating oil may be used on a wide range of applications, with the top uses being nuts, bolts, hinges, clamps, pipes, nozzles, frozen mechanisms, and locks and latches.

Other features

The Liquid Wrench L104 penetrating oil has a low odor, a 0% VOC content (making it safe to use on painted surfaces), a flashpoint of greater than 200 degrees Fahrenheit, and a specific gravity of 0.89. It is also 50-state compliant. The L104 comes with Liquid Wrench’s 100% guarantee which basically says that it is a hundred percent guaranteed to cut the rust, and if it doesn’t live up to it, you get your money back.

Pros

  • Really unfreezes sticky and clogged machinery
  • Works great at loosening up stuck parts
  • Is strong and only requires a few drops for it to work

Cons

  • None

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