Tackifiers improve oil film adhesion to gears and internal components. Extra additives protect gears from metal-to-metal contact and excessive wear. Recommended for use in outboards and sterndrives that require 85W-90 gear lube. Features: Improved emulsifiers help protect gearsTackifiers improve oil film adhesionAdditive protect gears from metal-to-metal contactRecommended for use in outboards and sterndrives Additive protect gears from metal-to-metal contact Recommended for use in outboards and sterndrives | High-Performance Gear Lube 32 oz