Maxima Oil Pro Gear Oil is full synthetic, ester-based gear oil offering unsurpassed performance and protection. Regenerative, synthetic polymers resist shearing, mechanical breakdown, and viscosity loss of the oil. The high-viscosity index (VI) formula offers consistent film thickness and performance over a greater operating temperature range. Pro Gear's technologically advanced formula increases horsepower and delivers superior anti-wear and extreme pressure protection from peak loads and elevated temperatures. Surface active chemistry delivers ultra-high film adhesion on gear faces, enabling higher load carrying capability and protecting critical gear interface areas and contact points. The fully formulated additive system contains anti-foam, rust, corrosion, and oxidation protection for high-stress conditions. Pro Gear is recommended for use in front and rear differentials, manual transmissions, and lower gear units of marine engines or anywhere API GL-5 gear oil is specified. Maxima Pro Gear oil is formulated with friction modifiers and is safe for use in hypoid gear systems.