PennGrade 1 high performance motor oil is specially formulated using high-quality, premium base stocks and select additive technologies to meet stringent lubricating demands of high performance, highly stressed street and racing engines. It delivers excellent shock load and high temperature protection to heavily stressed engine parts, including bearings, camshafts, rings, and pistons. PennGrade 1 high performance motor oil reduces internal friction for increased horsepower output, while maintaining their strong lubricating film protection–even under the most demanding torque and extreme temperature conditions. The high performance formulation also possesses good anti-foaming and shear stability characteristics, excellent high-temperature protection from thermal breakdown, outstanding film strength, and strong anti-wear properties.