GM Genuine Parts Gear Oils are formulated and tested to rigorous standards, and are backed by General Motors. These oils are used as a lubricant for manual gearboxes and differentials containing extreme pressure (EP) additives and antiwear additives. These additives are used in order for your vehicle to cope with the sliding action of hypoid bevel gears. This prevents friction between the gears and reduces heat. The main thing you'll notice about gear oil is its viscosity. Gear oil viscosity is much thicker than motor oil, with an average motor oil being 5W/30, and the average gear oil being 75W/90. GM Genuine Parts gear oils are the true OE formulas validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

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• Provides outstanding thermal stability for cleanliness and long service life
• Contains additives to assist in protecting gear teeth against pitting and scouring
• Helps protect parts from rust and corrosion
• Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)