

Blow-by refers to unburnt fuel/air mixture or exhaust that blows past the piston rings and enters the crankcase.
Brake fluid is the liquid in a hydraulic brake system used to transfer from the pedal to the braking mechanisms on the wheels.
Engine sludge is a substance form by dust, gasoline, oil, coolant, and blow-by mixed together by the moving engine parts. Certain engine oils contain detergents that break up sludge.
Oil, usually referred to as engine oil or motor oil, is a liquid that lubricates the moving parts of the engine and helps prevent rust and corrosion.
Refrigerant is the substance used to cool the air in the air conditioning system. R-12(CFC-12) was used in older vehicles. It has since been replaced by R-134(HFC-134a) which is used in newer vehicles
Retread tires, also called retreads, are used tires that have had the original tread removed and added new rubber to form a new tread.
Transmission fluid is a super thin oil that provides the hydraulic power in automatic transmissions.