Primarily for passenger cars and light trucks, Pennzoil Platinum^® Gear 75W-90 combines a premium performance gear oil additive package with a high quality synthetic base stock. The result is a gear oil that helps provide excellent low temperature fluidity for safe lubrication during very low temperature transmission or gearbox startup, and also aids in maintaining a thick protective oil film during extremely hot operating conditions¹. Fluid flow at cold temperatures is important to shift characteristics and lubrication of gear oils helping prevent wear and easing driving effort.