Automotive Dictionary

We know mechanics can speak their own language. That’s why we’ve tried to de-mystify some of the more unusual terminology to ensure you’re in control of your vehicle.



Oil sludge:
The build-up of oil in an engine. A gel-like substance that sticks to your engine parts and blocks oil passages preventing the normal flow of oil through your engine.

Out of round:
When a tyres condition is too far out of specification to be balanced properly.

In selected automatic transmissions the 4th and 5th gears run at lower speeds during highway driving. This saves fuel and engine wear as the engine runs slower and noise is reduced.

Occurs when the rear tyres lose adhesion under cornering and can cause a spin if the driver doesn’t reduce acceleration. In motorsports, this is also called loose.

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Who is Elvio?

Elvio is a seasoned Motor Mechanic with 25 years experience in the automotive industry. Well-known for asking the most obvious questions and his bizarre obsession with Datsuns (having owned more than 10), he seems to think the 70s was the golden era of motoring. Current rumours suggest he owns more than 100 caps, prefers Belgium bier to Australian and has been confused with the real Speedy Gonzalez. Well-known at the racetrack for getting maximum performance on a budget and his obsessive attention to detail, he is now taking his passion for all things with an engine to help his customers in his blog. Ask Elvio.