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

Oil aeration, poor lubrication or engine damage

Lower emissions

Better handling

Longer service intervals

Show the answer

Oil aeration, poor lubrication or engine damageThis was the right answer

Excess oil can be churned by moving parts and become aerated, reducing effective lubrication; increased pressure can also cause leaks or seal damage. Keep within the specified limits. Overfilling does not improve handling or extend a service interval.

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.

Loading the questions