Guys Guys guys, I've been saying for years;
ZF RECCOMMEND Castrol synthethic Transmax.
Big K and I have had great results with it...
Kriss was the first to find and use. I later found the ZF chart that recommended it in particular for the ZF4 and 5HP22 trannies, basically anything filled with Dexron II at birth.
Nick
If I can get a moment I will find it and post it up for y'all so see- for some time all I could get was 'use of antyhing else is not reccommended' (for good reasons I suspect- there are a lot of **very** wide and vague claims about suitability in all kinds of applcations made by lubricant people out there