Update:

Tranny topped up with Dex VI but still on stands because will be doing the front outer CV boots next. Took a bit less than 2 quarts.

Shifting seemed ok on the stands but of course the real test will be on the road.

Put some dishwasher detergent/water mix into the cooling system and did a few drain/refills to flush out any oil left.

Will be testing it tomorrow arter replacing the CV boots, hoping for zero drama!

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04 X5 3.0i auto
03 X5 4.6is