Revision question · Vehicle condition

What could happen if you overfill your 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

The handling may improve

Exhaust emissions could be reduced

Some gaskets might be damaged

You could wait longer before the next service

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Some gaskets might be damagedThis was the right answer

Too much oil can increase pressure, cause leaks or damage seals and gaskets, and become aerated by moving parts. These are possible consequences, not inevitable identical failures. Keep within the actual engine’s stated limits and arrange removal of excess oil.

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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