Originally posted by DR ///AMG
Mmmm I check my oil when the car is cold and leveled. IT has to be hot?!
No. The oil level will be the same, hot or cold.
But if you top it up, the oil you just added will take longer to reach the oil pan when is has to run through a cold engine. Therefore you need to wait longer to check the level with the dipstick after adding oil, to get a correct reading.