Gear oil and motor oil are both vital to your engine, but are two totally different products with different formulations, viscosity, additives, and friction properties (and are both available in synthetic formulations). Both gear oil and motor oil can break down, become contaminated, and lose their lubricating properties over time, although the service interval for motor oil is much shorter. Shop Advance Auto Parts for top-grade motor oil and gear oil from brands including FRAM, Valvoline, Mobil 1, Lucas, Royal Purple, and more.
Gear oil is heavier than motor oil and has a different set of friction properties and additives, but it's just as vital to the operation of your vehicle as the oil in your engine. Like motor oil, gear oil for transmissions or differentials is available in full-synthetic formulations that provide better protection and lubrication for moving parts.
And like motor oil, gear oil needs to be changed at prescribed intervals for proper protection. When it's time to change gear oil, be sure to check your owner's manual for the right brand, formulation, and weight of oil to use - using the wrong oil could damage your vehicle. Shop Advance Auto Parts.