1. Accurate Oil Level Reading: When the engine is running, the oil is circulated throughout the engine and some of it is pumped into the upper parts of the engine. This means the oil level you see on the dipstick while the engine is running can be lower than the actual amount of oil in the sump (oil pan).
2. Engine Damage: If you check the oil level with the engine running, the oil pump may be unable to pick up enough oil to provide adequate lubrication to the engine components. This can cause severe damage to the internal parts of the engine.
3. Safety Concerns: Checking the oil level with the engine running can be hazardous. The engine may be hot and there's a risk of coming into contact with hot parts, moving components, or rotating belts.
Therefore, for both accuracy and safety reasons, it's always recommended to check the oil level with the engine turned off and after waiting a few minutes to allow all the oil to drain back into the sump. This will give you a true reading of the engine's oil level.
Here's how to check the oil level correctly:
1. Park your vehicle on level ground and turn off the engine.
2. Wait a few minutes to allow the oil to settle back into the oil pan.
3. Locate the oil dipstick. It's usually marked with a bright handle or a clear plastic loop.
4. Pull out the dipstick, wipe it clean with a rag or tissue, and then insert it back fully.
5. Pull out the dipstick again and check the oil level. It should be between the "full" and "add" marks on the dipstick.
6. If the oil level is low, add the recommended amount of oil specified in your vehicle's owner's manual.
Remember, maintaining proper oil levels is crucial for the performance and longevity of your vehicle's engine. Checking the oil regularly (at least once a month) will help ensure it stays in good condition.
