Lubricant oil

Mineral oil

Coolant oil

Hydraulic oil

Boiling temperature should be low

Should develop foam

Oil viscosity should not be same in hot and cold condition

Oil viscosity should be suit the operating conditions

Crank Shaft

Cam Shaft

Crank pulley

Timing gears

Timing gears

Main journal

Crank pin

Cylinder wall

Through drilled oil passages

Through crank pulley

Through sprocket

Through vibration damper