These final drive and hydraulic fluids are specialized transmission and drive-train fluids containing additive technology that meets or exceeds the Caterpillar TO-4 specification requirements for use in off-highway equipment. They are designed for use in powershift, direct drive transmissions, winches, and final drives of all new Caterpillar equipment requiring the use of a TO-4 fluid. Their use will also provide improved performance and equipment life in older Caterpillar equipment which require a TO-2 fluid. Available in four viscosity grades 10W, 30, 50, and 60. The SAE 10W and SAE 30 grades can be used in all Allison transmission, torque converter and hydraulic system applications specifying the use of an Allison C-4 fluid.