Anti-lock braking system.

American Petroleum Institute.

American Petroleum Institute classification for oils suitable for diesel (compression ignition engines).

American Petroleum Institute classification for oils suitable for gasoline (spark ignition) engines.

Engine lubricating oil classification suitable for basic petrol and diesel engines.

Engine lubricating oil classification suitable for modern engines.

Air Conditioning

Air conditioning system that uses a refrigerant to remove heat from the air entering the passenger compartment.

An electronic device used to convert analog values to digital signals for electronic control units and instruments.

Air/Fuel Ratio