Royal Purple Miscellaneous Fluids, Oil & Lube

Royal Purple Max-Gear® is recommended for use in truck, RV / Motorhome, and automotive front and rear differentials, manual transmissions and lower gear units of marine engines that specify the use of an API GL-5 or GL-4 fluid.  Max Gear® is an ultra-tough, high performance, GL-5 automotive gear oil designed to provide maximum protection to heavily loaded gears while maximizing power through the drive train.  It outperforms other GL-5 gear oils because it combines the...more

Royal purple purple ice super coolant is a high performance, synthetic, radiator coolant additive for both gasoline and diesel engines. Royal purple ice is formulated to reduce the surface tension of the coolant, which improves heat transfer through the cooling system while providing additional protection against rust, corrosion and erosion.  Purple Ice prevents the formation of scale deposits in the radiator for optimum coolant flow and lubricates the seals of the water pump. It is ideal f...more

Royal Purple Max-Tuff® synthetic assembly lubricant is an ultra-tough, synthetic lubricant designed for use in reassembling repaired equipment.  Royal purple Max Tuff lubricants utilizes unique, synthetic molecules that adhere tenaciously to metal surfaces to create a formidable, load-bearing physical barrier between surfaces.  This minimizes the possibility of boundary conditions (metal-to-metal contact) while providing excellent protection to both ferrous and nonferrous metals ag...more