Which is the most appropriate way to check the engine oil level with the oil dipstick?
💡 Hint
Engine oil reads accurately only when all the oil has drained down into the oil pan at the bottom of the engine. The slope of the car, whether the engine is running, and wiping the dipstick once all change the reading, so check those conditions and be suspicious of "the more the better".
Answer: ③
Explanation
For an accurate reading, park on level ground, turn off the engine and wait briefly for the oil to drain down. Wipe the dipstick, reinsert it, pull it out and check that the level is between F (full) and L (low) and that the oil is not overly black or murky. On a slope or with the engine running the reading is not accurate, and overfilling well past F is also bad for the engine.
Legal basis: 안전운전 일반: 엔진오일 점검