Pennzoil 1-Qt. Automatic Transmission Fluid is a high quality fluid based on high viscosity index mineral oils and carefully selected additives. It is blended to meet the stringent requirements of leading automotive transmission manufacturers. It is friction modified to provide consistent, reliable, smooth and trouble free operation of automotive transmission systems. It has high oxidation resistance to degradation and keeps automatic transmissions clean. It has good shear stability and a special VI improver minimizes the changes in viscosity with operating temperature. It provides dependable anti-wear and gear protection for long component life. It has low temperature performance that provides excellent oil fluidity at low temperatures. It is ASTM compliant.