ATF III

act as a hydraulic oil (hydrostatic function) – most valves and pistons are moved in the transmission with oil pressure;

act as an efficient cooler and surface cleaner – all transmission components are cooled with the transmission oil, as is the surface cleaning inside the transmission;

produce enough friction on the pressure surfaces of the clutch discs. Friction modifiers – change the degree of slipperiness of the oil between the two clutch discs and is critical to gear shifting;

to protect mechanics from wear and tear. Anti-wear and extreme pressure agents – help lubricate and protect parts from metal-to-metal contact, creating a protective film;

to protect seals against aging and hardening. Seal swell additives – protect the seals from other aggressive chemicals that are in the transmission oil. Without them, the transmission oil pressure would soon be reduced, and external leaks would occur;

can withstand extremely low temperatures. Pour point depressants help reduce oil viscosity at low temperatures. This is a prerequisite for the transmission to work flawlessly with -40° C;

can withstand very high temperatures. Thickeners and Viscosity Index Improvers – polymers that ensure that base oil does not become too fluid at high temperatures;

The oil must be able to withstand instant high temperatures above 300C. Oxidation inhibitor neutralizing acids reduce the formation of corrosive compounds and mud formed by the combination of oxygen, heat and other contamination;