What is the purpose and function of motor oil. What is the purpose and function of ATF and Gear OIl?

Motor oil is used primarily as a lubricant for the rotating and reciprocating items (crankshaft, camshaft, pistons, rods and bearings)in your engine. Secondly is is used to keep these items cool.


ATF (automatic transmission fluid) is used in automatic transmissions as a hydraulic fluid that makes the transmission operate, and lubes and cools the parts also. ATF is used in manual transmissions as a lube and cooling agent.


Gear oil is used in differentials (rear-ends) to provide lubrication for the gears and bearings in them.


Hope I helped!What is the purpose and function of motor oil. What is the purpose and function of ATF and Gear OIl?
Motor oil keeps the pistons lubed and cool. ATF is hydraulic fluid for automatic transmissions, and gear oil is used in manual (mostly rear wheel drive) transmissions.