immediately after the ignition switch is turned off

while the engine is running

a few minutes after the ignition switch is turned off

while the engine is running at high idle speed

dilution of fuel in the crank case

dilution of oil by water in the crank case

dilution of lubrication oil by fuel in the crank case

dilution of mixture passing through crank case in two stroke engines

release chamber

balancer

relief valve

stop valve

carbon disulphide

ethylene glycol

ammonium chloride

freon - 12

it blows air through the radiator when necessary

it is turned by wind force as the vehicle moves forward, and its rotation drives the water pump

it cools the engine by blowing air onto the cylinder block

it draws heat out of the engine component