Pennzoil 56076 75W-90 Synthetic Gear Oil (GL-4) - 1 Quart Synthetic SAE 75W-90 is designed primarily for lubrication of differentials and manual transmissions requiring an API GL-5 gear lubricant. It can be used in passenger cars, light truck, sport utility vehicles and vans SAE 75W-90 also provides excellent service in torrid climate by not thinning at high temperature, thereby maintaining a full film of protective lubricant on gear teeth In hot running gear boxes, it allows longer service due to the excellent stability of the synthetic base stock used in it Synthetic gear oil Gear oil weight: 75W-90 Contains special extreme pressure and anti-wear additives, minimizing wear that can occur with high or shock loads Provide protection over a wide temperature range Reduce or eliminate chatter in limited-slip differentials