What could happen if you put too much oil in your engine?
- A Fuel economy may be improved
- B The engine may run more quietly
- C The engine will use less oil
- D The oil seals may be damaged
Why this is the answer
Too much oil in the engine will create excess pressure and could damage the engine seals and cause oil leaks. Any excess oil should be drained off.
Why the other answers don't fit
- A
- Fuel economy may be improved — Fuel economy gets worse, not better.
- B
- The engine may run more quietly — The engine does not run more quietly with too much oil in it.
- C
- The engine will use less oil — It will use more oil, not less, once the seals are leaking.
Where this comes from
- Driving: the essential skills — section 14
- NSD
Rule numbers link to The Highway Code on gov.uk.
Where this question comes from
The question, its options and the explanation are reproduced word for word from the DVSA revision question bank under licence. The licence requires them to appear unaltered, so we cannot reword them and neither can anyone else — that is why you will meet the same wording on other sites. Everything else on this page is written by Theory Hub: the explanation of why each wrong answer is wrong, the topic guide and the revision notes.
Asked in: Driving Instructor (ADI Part 1)
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