Red Line Oil 50104 Fully Synthetic 75W85 GL-5 Gear Oil is a set of 4 quarts designed for optimal performance in various automotive gear systems. With a Pour Point of -49°F (-45°C) and Brookfield Viscosity of 300 @ -40°C, this oil is suitable for use in different applications. It meets API Service Class GL 5+ requirements and has a Viscosity Index of 171. Made in the United States, this product carries a California Prop 65 Warning.