Here is an interesting thing. I was always told that the best way to check engine oil level was in the morning when the car is cold and the oil had time to slide down to crankase. I was told that if you check oil after the car has been driven the dipstick will show less oil then there is. However, on e-how, and some other web-sites they recommend checking the oil after the engine is warm/has been operating. Your two cents?