$12.49 - $564.99


(296 customer reviews)

Oil Friction Reducer
FR3 Friction Reducer is a lubricity enhancing oil additive that increases the lubricating & wear reduction properties of the host oil. The product contains three proprietary synthetic lubricants that have unique lubricating properties even compared to PAO or mPAO synthetics of the same viscosity. The anti-wear component of the formula is an exclusive carbon nano lubricant that fills in microscopic irregularities on the machined surface. The synergy of these components extend the base oil performance in shear stability, oxidation stability, film strength & especially friction reduction. It also increases the oil’s film strength for added protection and efficiency.

**Please make sure overall oil level does not exceed oil fill level when adding**


*For case-quantity discounts, please call 1-800-341-6516
or email


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  • 100% SATISFACTION or your money back
  • GUARANTEED not to void your manufacturer’s warranty


Hot Shot’s Secret FR3 Friction Reducer is a one-of-a-kind, 100% synthetic oil additive that improves performance and protects engines. This engine friction reducer is blended with three patented lubricants, including a nano lubricant, and is proven to reduce engine wear by up to 43% plus improve your vehicle’s performance by increasing horsepower and fuel economy up to 5% each.

FR3 Friction Reducer will improve your vehicles oil by improving its shear and oxidation stability, film strength and especially friction reduction. This means your oil will stay in specification longer, stay cleaner and protect your engine better, allowing it to last longer.

FR3 Friction Reducer is recommended for any vehicle or equipment and works in conventional and synthetic oil. This synthetic oil additive can also be added to power-steering pumps, differentials and hydraulic systems.


  • 5 quart (car): 8 ounces FR3
  • 15 quarts (truck): 23 ounces FR3
  • 42 quarts (semi): 64 ounces FR3

Add To:

  • Engine oil
  • Power steering
  • Hydraulic system
  • Differentials

Recommended Frequency:
Use one treatment of FR3 every oil change.

Use in All Engines:
Semi-trucks, pick-up trucks, farm equipment & autos. Effective in all engines including: Ford Powerstroke, Dodge Cummins, GM Duramax, Saab, Volkswagen, Audi. You can use FR3 oil additive to treat any oil-lubricated system except air conditioning and aircraft. Even though FR3 is an industrial product, you’ll find that small two cycle engines love it; just add FR3 to your oil before mixing it with the fuel. Your automobile, light truck or other personal vehicles will benefit from FR3 in the engine, power steering unit, and differential.

NOTE: FR3 displaces the same amount of oil. Example: If your oil capacity is 10 quarts, 15 oz. of FR3 and 9 quarts + 17 oz. of oil. Do not use in conjunction with other aftermarket oil additives, including Stiction Eliminator

Hot Shot’s Secret FR3 Friction Reducer can improve the properties of your host oil by using three unique, patented lubricants all within one product. Blended with nano carbons and group V esters, FR3 Friction Reducer attaches itself to the oil-wetted components inside your engine, creates a stronger film strength and fills in microscopic blemishes on the machined surfaces.

By improving the properties of your host oil and greatly reducing friction, FR3 Friction Reducer is proven to reduce engine wear by up to 43%. The synergy between the patented lubricants inside FR3 Friction Reducer also allows it to improve your vehicle performances, increasing both horsepower and fuel economy up to 5%. This is possible due to improved ring-sealing, reduced blow-by and increased combustion efficiency.

FR3 Friction Reducer is a unique product with a unique chemical makeup. Upgrade your oil by using FR3 Friction Reducer.

The Science

There is not a product in the world that contains the same chemical makeup as Hot Shot’s Secret FR3 Friction Reducer, making it truly a one-of-a-kind. It contains the most effective nano lubricant available, nano carbons. Nano carbon particles are spherical in shape and are less than 10 nano meters in diameter. This allows the lubricant to find the voids and blemishes on a machined surface, fill these gaps and provide a smoother surface for the lubricating film to form.

While nano carbons are highly effective on their own as a friction reducer, FR3 Friction Reducer also contains two other patented lubricants blended into the formula. The synergy between these patented lubricants have unique lubricating properties even compared to PAO or mPAO synthetics of the same viscosity. FR3 Friction Reducer is also negatively charged, allowing it to attach itself to the oil-wetted components inside your engine. The esters inside FR3 Friction Reducer are also responsible for the increased rubber seal lubrication as well as a slight swelling of seals for less oil leaks.

Wear rates are reduced by 43% on the ASTM G-133 test when using FR3 Friction Reducer. The patented nano particles cross link at the surface, which increases film strength and boundary lubrication. The synergy of these components extends the base oil performance in shear stability, oxidation stability, film strength and especially friction reduction.

Lost compression is restored by cleaning deposits on the rings and pistons and by providing a smoother sealing surface for the rings, which results in better ring sealing, less blow-by and increased combustion efficiency. The reduction in the coefficient of friction reduces operating temperatures and improves the oxidative stability of the host oil ensuring longer life for your engine. Fuel mileage and horsepower gains of 5% are not uncommon with the use of FR3 Friction Reducer, as backed by dyno and road testing.


Tech. Data



No other diesel oil or fuel additive has a better guarantee than Hot Shot’s Secret products. If our products do not deliver as promised, then we will give you your money back. End of story.

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Common Questions About Hot Shot’s Secret Oil Friction Reducer

You rely on your friction reducer to protect your engine’s components from wear and improve your vehicle’s fuel economy. As a result, you want to make sure you choose the right oil additive for your engine. To make an informed purchasing decision, review answers to some of the most commonly asked questions about FR3 below.

How does FR3 Friction Reducer work?

FR3 is an oil additive that boosts lubricity using three synthetic lubricants. These lubricants work together to increase horsepower, combustion efficiency and base oil performance.

One of the synthetic lubricants in FR3 — made from round nano carbon particles less than 10 nanometers in diameter — also reduces wear on engine components by filling in imperfections and creating a smoother surface for the lubricating film to form. Hot Shot’s Secret FR3 Friction Reducer has a negative charge, which allows it to effectively adhere to oil-wetted engine components.


Will FR3 Friction Reducer work with my engine?

We have formulated FR3 Friction Reducer to work safely and effectively in gasoline and diesel engines, including vehicle, marine, RV, agriculture, construction and semitruck engines. This oil friction reducer also effectively lubricates power steering, differential and hydraulic systems.


When should I add FR3 to my engine’s oil?

You should add FR3 Friction Reducer to your engine’s base oil during each regularly scheduled oil change. The treatment ratio for our oil friction reducer is 1.5 ounces of FR3 per quart of oil. FR3 is compatible with most mineral and synthetic base oils, as well as motor, transmission, gear and hydraulic oils, so you can feel comfortable adding it to your vehicle’s most critical systems.


Can I use FR3 with other oil additives?

We do not recommend using FR3 Friction Reducer at the same time as any other oil additives, including our own. However, you can alternate using FR3 and Hot Shot’s Secret Stiction Eliminator to help remove the buildup created by burnt oil. For the best results, use Stiction Eliminator for the first oil change and FR3 Friction Reducer for the next two oil changes, then repeat the cycle.


Will using FR3 void my engine’s warranty?

Using FR3 will not damage your engine’s components or void your manufacturer’s warranty. That’s a guarantee. The Magnuson-Moss Warranty Act prevents manufacturers from using unfair or misleading warranty disclaimers, and it also ensures your warranty remains in effect when you use our additives. Just remember to use FR3 with a type of oil recommended by your manufacturer for use with your engine.


Contact Hot Shot’s Secret to Learn More

If you have additional questions about FR3 Friction Reducer, feel free to reach out to us for more information. At Hot Shot’s Secret, our knowledgeable team is always happy to help customers find the right oil additives for their needs.

FR3 Friction Reducer comes in containers ranging from 8 ounces to 5 gallons. To order, select a size and add it to your cart, or call 1-800-341-6516 for case-quantity discounts.

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