I've noticed the red ATF dripping from the very rear of the auto gearbox as it heads to the rear wheels / propshaft. I'm going on an Autobahn trip Friday so going to top it up by using a 17 mm allen key and a clean hose with the ATF bottle on roof (proper Audi Fully Synth ATF). I've heard temp matters a lot I have VAGcom and can read Gearox oil temp any tips on what level / waiting period from driving to checking.

Has anyone ever change the rear seal is it possible in situ the gearbox is DAJ FRU (Tiptronic) 2.5 TDI 110KW V6 2000 Quattro ?

Much Appreciated Roger