Description FR3 Friction Reducer is a 100% synthetic engine additive that enhances the host oil's wear reduction and lubricating properties. Hot Shot's Secret oil friction reducer comes equipped with three patented synthetic lubricants with prototypical properties in comparison to metallocene polyalphaolefin (mPAO) or PAO synthetics of the same viscidity. An exclusive carbon nano lubricant â the formula's anti-wear component â fills in microscopic irregularities. This component's synergistic properties extend the base oil's performance in film strength, oxidation stability, shear stability and friction reduction. Its properties can also add to the oil's efficiency and protection. The 32-ounce FR3 friction eliminator is recommended for all diesel and gas engines. Add it to a hydraulic system, power steering, engine oil or differentials.