I'm a machine.
- First Name
- Nov 22, 2019
- Reaction score
- 2020 Honda Civic 2 Door Coupe Si / 1993 Chrysler Intrepid 3.5L
This wisdom is fairly flawed, really. While it's technically true that accurate reading would be taken when the oil is warm, oil volume expands when hot, so if he's trying to determine is the oil is diluted and higher than normal, checking it cold is relevant.horrible advice,
oil should be checked at full operating temperature,
and withing 2-3 mins of shutting the engine off,
read your manual
My car came from the dealer spot on the full line when it's cold. You don't do an oil change and pour hot oil from the bottle into the car either, so again, it's somewhat mooted by the method applied. If his oil is over full when cold, for the purpose of this test, it's overfull when hot.