Jorn, porkface has the right approach. No sense using 4 or 5 quarts of ATF for only a couple of hundred miles. If you use the Topsider to remove ATF from the transmission pan I would be interested to hear how much ATF remains in the pan when you remove the drain plug. As you are aware dropping the pan and changing the filter is the messy part.

When draining the torque converter only turn the engine CW to locate the drain plug.

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Fred Hoelzle