LubriMatic 11564 1 Pack Power Pro Synthetic Blend 80w/90 Marine Lower Unit Gear Lube, 1 Quart Lubrication synthetic blend 80W/90 marine lower Unit Lube is a synthetic blend gear Lube that protects high performance lower units in extreme operating conditions Designed specifically for high performance marine use to protect against extreme operating conditions; Offers superior water demulsibility Lowers operating temperatures of the lower gear Unit by reducing the coefficient of heat and friction; Includes a higher additive package than normal lower Unit lubes Recommended for use in all domestic and foreign lower units; this product meets or exceeds API GL-5 and mt-1 service classifications; highly recommended for all engines over 100 HP 1 Quart bottle