Revision question · Vehicle condition

Why is it important to avoid overfilling the engine with oil?

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

Answer options

It could leave an oil stain on the road

It will increase the amount of exhaust gases

It could increase pressure in the engine and cause damage

It will damage the exhaust system

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It could increase pressure in the engine and cause damageThis was the right answer

Too much oil in an engine can be just as bad as too little. Overfilling an engine can create excess pressure, cause oil leakage through seals and result in expensive damage.

Reviewed reading for this question

Avoid both low oil and overfillingReviewed guidance summary · The source supports possible overfill pressure, seal damage and poor lubrication; the power-loss question is updated to that supported objective.

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