Why is checking engine oil level immediately after driving at high speed inaccurate?
Answer and explanation
Correct answer: B. Much of the engine oil is still circulating and has not drained into the oil sump
- Step 1: Oil sump drainage time. Step 2. Oil must have time (3-5 minutes) to drain down from the cylinder heads into the sump where the dipstick measures it. Answer: Much of the engine oil is still circulating and has not drained into the oil sump. Why not the others: Oil does not evaporate into steam; dipsticks do not expand by centimeters; oil is not magnetic.
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