A cool engine ensures that the oil enough time to settle at the bottom of the oil pan and will give you a more accurate reading of how much oil is in the car.
In a small number of cars (such as the Mini Cooper) the hood release on the passenger side. Make sure the vehicle is on a flat and level surface or the dipstick will provide an inaccurate reading. This is done best at a gas station where the surface is flat and even.
The dipstick is often located near the front of the engine. When you locate it, give it a tug; it should pull out smoothly. Take care not to pull out the transmission fluid dipstick. If you’re not sure which dipstick is connected to the oil tank, check the user manual that came with your car, or ask a gas station attendant for help.
If the oil film reaches up to or below the ADD line, it’s time to add more oil. If the oil film is close to the FULL line, you don’t have to add more oil quite yet.
