Thanks all, it was very informative

Hi Gilly

The reason I said 70-80% was that my mechanic replaced about 6 quart of transmission fluid. Thinking the case has 8-8.5 quarts, so 70-80% is about right.
My mechanic did use the MB Transmission fluid. So far I haven't any problem.

I cann't believe it's that difficult to check the AFT level. There must be a more scientific way to check its level hot or cold. For example: (again this is my opinion hypothetically)
- cold: engine is not even on - torque converter say keeps 50% (this number could be any) of the ATF, so the level should be check for at 1/2 way mark.
- hot: torque converter may "blow out" and only keep 10% ATF, so the the level should be check at 90% mark + oil volume expansion - so maybe at top of the stick is the right level.

I don't think oil expand/compress that much between 60-80C, now would the different in temp. cause the converter to blow out more ATF?

Just my thought

Regards,
Jeffrey