GL-4 and GL-5 gear oil provides maximum protection for heavily loaded gears and reduces friction. Eliminates gear and bearing wear under severe conditions caused by high loads or sudden shock. Run cooler, quieter, and smoother. Contains anti-slip additives for posi/anti-slip differentials.
Max-Gear is an ultra-tough automotive gear oil. It's designed to maximize power and provide unsurpassed protection to heavily loaded gears. It makes gears run smoother, quieter, cooler and longer without overhauls. Max-Gear outperforms other gear oils because it combines the highest quality synthetic oils with Royal Purple's proprietary Synerlec additive technology. Max-Gear is recommended for use in truck, motor home/RV and automotive front or rear differentials, manual transmissions, and lower gear units of marine engines that specify use of an API GL-5 or GL-4 fluid. All viscosities of Max-Gear are formulated with hypoid friction modifiers necessary for use in clutch or cone type differentials. No additional additives are necessary.
Royal Purple part numbers: 05300, 05302