Revision question · Safety and your vehicle

Which of these problems can result from putting too much oil in a car engine?

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.

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The clutch pedal will lock

The air intake will become blocked

The timing belt will slip

The oil seals will leak

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The oil seals will leakThis was the right answer

Excess engine oil can increase internal pressure and cause seal damage or leaks. It can also be churned into foam, impairing lubrication. Check the level by the vehicle manufacturer’s procedure and do not exceed the maximum mark. If overfilled, arrange safe removal of the excess before normal use.

Reviewed reading for this question

Too much engine oil can also cause damageReviewed guidance summary · Repco’s original automotive technical guidance expressly connects overfilling to leaks and seal damage; this is a possible consequence, not an inevitable failure in every engine.

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