Oldskewel
Thanks for all the insight you posted. The approach and methodology is exactly the way to service any part especially hi-end auto transmissions.
For those who have ZF transmissions there is a host of info on the web besides here if you would like to know more. One suggestion is the manufacturer's own site
ZF Friedrichshafen - ZF Friedrichshafen AG There are down load service procedure manuals and lube recommendations (one of which is attached to this posting). Great insight.
Thanks again for posting your efforts and results. I am sure we will continue the battle of "to change or not to change". IMHO fluid life at 10 years is the point of replacement and filter change time, period. No lube manufacturer recommends using fluids in a sealed bottle at that age much less keeping them in service.
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2005 X5 4.8IS
The
Blue ones are always FASTER....
Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green