I checked the fluid level on my '88 420sel and there are two marks on the dipstick. Am I correct in assuming the top is for warm transmission and bottom hash is for checking the level with cold trans fluid?
With my car warm the level is a bit below the bottom mark - so I want to add a bit of fluid. Can somebody tell me what the volume difference is between the bottom and top marks?

Thanks
Peter
1988 420sel
1988 300e (sold)