MANIFOLD ASSEM. 9L7857 - Caterpillar

Transmission/drive train oils are classified by the Cat TO-4 and the Cat TO-4M Performance Requirements. These Performance Requirements were developed by Caterpillar for use in Cat Powershift transmissions and in most Cat final drives. Refer to the “Maintenance Section”, “Caterpillar Fluids” article for more information on Caterpillar fluids and to the Tables in the Lubricants Viscosity section for the application of these fluids in various Cat machines.
The Cat CD/TO-2 transmission/drive train oil specification has been obsolete since 1990. The obsolete CD/TO-2 specification is tied ONLY to the also obsolete API CD oil category. The “TO-2” oil specification existed only as CD/TO-2. Specification claims of CF/TO-2, ATF/TO-2, Cat TO-2 and other similar “TO-2” claims are not accurate. Caterpillar does not monitor or support the obsolete Cat CD/TO-2 specification. Use of CD/TO-2 oils, or the use of oils claiming to meet “TO-2” in machine compartments where Cat TO-4 specification oils are required is NOT recommended and their use is at the user's risk.
Applications
Transmission/Drive Train oils are recommended for use in Powershift Transmissions, certain Direct Drive Transmissions, certain Final Drives, Differentials and Final Drives, Drive Axles, Transfer Drives, and hydrostatic drive/hydraulic systems of various machines.The details of the applications of Transmission/Drive Train oils are given in the “Lubricant Viscosity” section of this Special Publication.Cat TDTO (Transmission/Drive Train Oil)
Cat TDTO exceeds the requirements of the Cat TO-4 transmission/drive train oil specification by passing five more Cat tests.Cat TDTO is balanced to give maximum frictional material life in powershift transmissions. Cat TDTO also helps eliminate brake chatter in wet brake applications in Cat machines. This oil passes the requirements for the TO-4 oil specification which includes the frictional requirements and gear wear requirements. This oil is offered in several lubricant viscosity grades.Cat TDTO-TMS (Transmission/Drive Train Oil-Transmission Multi-Season)
Cat TDTO-TMS exceeds the requirements of the Cat TO-4M transmission/drive train oil Performance Requirements by passing additional Cat tests.Cat TDTO-TMS is synthetic multigrade oil that is developed to provide optimal performance in transmissions, wet brakes, final drives, and hydraulic compartments that must operate in wide range of temperatures. Cat TDTO-TMS can be used in Cat machine compartments where Cat TO-4 and TO-4M oils are recommended. This oil can be used in other manufacturer machines that recommend TO-4 or TO-4M Performance Requirements oils.TDTO-TMS is specifically formulated to reduce transmission gears wear, improve the performance and efficiency of transmissions in cold weather, especially for machines with electronic controls, and to ensure long life and excellent performance for gears, bearings, and friction disc materials.
Cat Transmission oils are formulated for transmissions and drive trains only, and should not be used in engines. Shortened engine life will result.
Do not use the Cat GO (Gear Oil) or commercial gear oil in the machine compartments unless specifically recommended by Caterpillar. The gear oil can cause seals to fail. The seals can also leak. The gear oil may not be compatible with friction materials. The oil can reduce the efficiency of the transmission and the brake performance.
Commercial Transmission/Drive Train Oils
Note: Non-Caterpillar commercial oils are as