Simplified Automotive Terms for Ladies

Automotive Terms Definitions
Click on the letter below to find the defintion you are looking for.

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We are providing these pages of automotive terms to assist those donating or recycling cars or other vehicles.

Terms beginning with the Letters N and O

Neutral Safety Switch

Switch that prevents the starter from operating in any transmission range except park or neutral.

Octane

A petrol rating of how quickly the fuel burns. The higher the rating, the slower and more controlled the fuel burns. This allows its use in high compression engines.

Odometer

Device on the instrument panel to measure the total miles traveled in the course of the life of the vehicle.

Oil

A lubricant made from crude oil used for lubrication between moving parts and for cooling.

Oil Filter

A device, with a typically with a filter size of 10 microns, which strains dirt and particles out of the engine oil.

Oil Pump

A device that forces engine oil through the engine to lubricate the moving parts.

Oxygen Sensor

Indicates the level unburned fuel in the exhaust so the computer can adjust the air- fuel level.