Multi-Purpose ‘Classic’ Gear Oil GL-4, SAE 80W-90 is designed to be used with synchronizers, bushings, thrust washers and other components typically found in classic manual transmissions and transaxles, Blended using high quality premium mineral base stocks and select additive technologies, Not for use in applications requiring API GL-5 quality extreme pressure (EP) lubricants or where OEM specialized fluids are mandated, Sold as 1-quart bottle.