How to Check Oil Level in Car Three Parts:Finding the DipstickChecking the OilAdding Oil Checking the oil levels in your car is essential to maintaining the life of the vehicle. It's one of the most straightforward bits of regular maintenance you can perform in your vehicle,important especially before long trips that will involve heavy engine use. You can learn to locate the right gauges in your engine compartment,diagnose problems with the oil in your car,and address those concerns if necessary. Part 1 of 3: Finding the Dipstick 1. Check the oil cold. Mobil One and other oil manufacturers recommend checking engine oil levels before driving your vehicle,when the oil is still cold.[1] You want the oil to be in the oil pan,not in the engine as it will be while you're driving. Immediately after driving,the oil level will appear lower,making it easier to overfill the oil. If you want to check the oil and have been driving it ... Read more »