API GL-4 Gear Lubricants

PSC provides API GL-4 EP Gear Oils that are formulated with highly refined base oils and an additive package that provides extreme pressure (EP) protection, inhibits rust and corrosion, and contains a highly effective antifoam agent.


API GL-4 EP Gear Oils are recommended for lubrication of passenger car hypoid gears operating under high speed/low torque or low speed/high torque conditions where severe shock loading is not occurring. Not for use in limited slip differentials or applications requiring an API GL-5 gear oil.

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