Mark - Thanks for the answer.

Can you tell me which of the two fluid lines on my transmission is the line returning from the radiator cooler? Your instructions are clear for the E40D. The 4F50N has the two lines located at the same location on the transmission, one just a few inches above the other.

A transmission repairman recommended keeping the ATF fluid about 0.5 quarts higher than the high mark on this particular transmission. Do you have any advice on this?

Thanks Again,

John