How Cold Should a Car Engine Be to Check the Oil Level?

Home mechanic checking oil

Completely Cold

Checking oil is an important part of maintaining a vehicle. Most vehicle engines should be completely cold when you check the oil level, mainly so you don't burn yourself. A cold engine will ensure there has been adequate time for all the oil to drain from the engine into the oil reservoir.

Warm Temperature

Some car manufacturers recommend checking the oil when the engine is warm. Wait a few minutes after turning the engine off for the oil to drain completely.

Bottom Line

Some automakers recommend checking oil while the engine is warm. Home mechanics should follow their manufacturer's recommendations. If the vehicle manual does not recommend a particular method, check the oil with the vehicle completely cold to allow all oil to completely pool in the oil reservoir.

References

• Consumer Reports: How to Check Your Car's Engine Oil
• Auto MD: How to Check Engine Oil Level