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PennGrade1 Multi-Grade High Performance Oils are specially formulated using high quality PennGrade base stocks and select additive technologies to meet the stringent lubricating demands of high-performance highly stressed street and racing engines. PennGrade 1 Synthetic Blend High Performance Oils deliver excellent shock load and high temperature protection to heavily stressed engine parts including bearings camshafts rings and pistons. They reduce internal friction for increased horsepower output while maintaining their strong lubricating film protection even under the most demanding torque and extreme temperature conditions. These high performance formulations also provide good anti-foaming and shear stability characteristics excellent high temperature protection from thermal breakdown outstanding film strength and strong anti-wear properties.