Service manual for Sienna says to check atf when engine is running, after it has gotten up to operating temps (this obviously would be the hot marks on the atf dipstick). Now when I'm checking for the cold level, should I still start the car, & push the trans through all the gears and then back to Park? Or does the cold level mean, checking when van is level, but with engine off? I want to try a cold check, because I am pretty sure I overfilled when I drained it today; last hot check after my ATF drain & fill today was unclearâ€”the atf from the full mark on up, extended several inches up the dipstick above the hot mark. I know I didn't overfill it that much! My Sienna oil dipstick is very hard to read in the same wayâ€”when checking hot, there is just oodles of oil that climb up the dipstick so I have to check the oil level cold.