Gear saver gear box and transmission oils are formulated to protect clutch and transmission components. Nothing beats Bel-Ray gear saver. Extreme pressure additives absorb the heaviest shock loads which regular engine oils just cant handle. Eliminates metal to metal contact for less friction, wear and heat. No foaming or breakdown. Suitable for air and water cooled motorcycles with separate crankcase and gear oils. Note: 75w works particularly well on gas gas pro trials bikes eliminating potential clutch issues.