• valvoline hd gear oil gl 4 pro

Valvoline Heavy Duty Gear Oil GL-4 is a gear lubricant created for gearboxes and transaxles of trucks, buses, and some passenger cars. This gear oil is specially engineered for heavy-duty vehicles.

Valvoline™ gear fluid for heavy-duty applications provides outstanding protection and lubrication of the gearbox of passenger cars, trucks, and buses over a wide range of climatic conditions and temperatures.

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