characteristics allow the lubricant to resist throwoff and provide a film thickness greater than an SAE 250 grade, with the same low fluid friction as with Red Line's 80W140. Recommended for heavily-loaded racing differentials and transmissions, Off Road racing and problem gearboxes. Offers a "best of both worlds" balance of relatively low drag and the utmost in protection. - Film thickness greater than an SAE 75W140, yet low fluid friction like 80W gear oil or 30W motor oil - Excellent low-temp flow, improved cold shifting - For racing differentials under moderate loads - Popular in racing transmissions like Hewland and other Road Racing dog-ring boxes, Bert and Brinn for Stock Cars, G-Force, and Liberty clutchless for Drag Racing.