Correct answer
Level ground and the manufacturer’s temperature and waiting conditions.
Park on level ground and follow the manufacturer’s temperature and waiting conditions, normally with the engine stopped so oil can return to the sump. Some procedures use a cold engine; others allow checking after warming, stopping and waiting the specified time. No single temperature applies to all engines. Wipe and reinsert the dipstick as instructed and check the marked range without overfilling.
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Always immediately after revving, with the engine running, without consulting the manual.
Always on a slope so oil reaches the dipstick better.
Level ground and the manufacturer’s temperature and waiting conditions.
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