Compatibility: Ideal for GL-1, GL-3, and GL-4 applications; caters to gear oil viscosity of 75W, 80W, SAE 40, 10W40, and 15W40 motor oils. Red Line MT-90 75W-90 GL-4 Lubricant. Imagine experiencing the unrivaled efficiency and performance of your manual transmission while knowing it is under the protection of a top-rated lubricant.
