What do heated fuel lines prevent?
- A The cab temperature from dropping
- B The radiator from freezing
- C The windows from misting
- D The diesel from solidifying
Why this is the answer
In cold weather, diesel fuel can solidify as it starts to freeze. This is known as waxing. Waxing prevents the fuel from flowing properly and this can stop the engine from running.
Why the other answers don't fit
- A
- The cab temperature from dropping — The cab is heated from the engine coolant.
- B
- The radiator from freezing — The radiator is protected by anti-freeze.
- C
- The windows from misting — Misted windows are cleared by the heater and demister.
Where this comes from
- Driving Buses and Coaches — section 9, section 11
- Driving Goods Vehicles — section 11
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: Lorry & Bus (LGV/PCV)
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