TO-4 fluids are specialized lubricants formulated for heavy-duty equipment, particularly for transmissions, final drives, and hydraulic systems. These fluids meet the stringent requirements set by the Caterpillar TO-4 specification, ensuring compatibility and optimal performance in Caterpillar equipment and other machinery. TO-4 fluids offer excellent thermal stability, maintaining their viscosity and lubricating properties even under high-temperature operating conditions. They provide superior wear protection, reducing friction and minimizing component damage in heavy-duty applications. TO-4 fluids also offer exceptional oxidation resistance, preventing the formation of sludge and deposits and extending the fluid's service life. These fluids are designed to handle heavy loads, shocks, and vibrations, providing reliable performance and protection in demanding environments. With their adherence to the TO-4 specification, TO-4 fluids are the recommended choice for equipment owners and operators seeking reliable lubrication and optimal performance for their heavy-duty machinery.