RJ, The 7.3 liters you drained from the transmission.... what percentage of total transmission fluid does that represent?

On other cars, I use the technique of disconnecting a line and pumping the fluid out by starting the car, while at the same time refilling with new fluid, stopping when the fresh fluid starts coming out. This gets most of the fluid changed over the "drop-the-pan-and-refill" technique.

It seems this technique I use would be unnecessary if most of the fluid is changed in the 722 transmission by just dropping the pan.

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95 E320 Cabriolet, 159K