This seems more complicated than I thought. I'm about to drain/fill my ATF this weekend. And I want to be absolutely sure that I use the right ATF. I went to realoem.com to find out my tranny OE part#. According to my mfg date, my transimission part# is 24 00 1 421 215. And according to ZF oil reference guide, http://www.peterschmid.com/zfoilguide.htm

My ATF grade is Dexron II-D, not Shell LA 2634 nor Esso LT 71141.

Is this correct? How did you guys search for yours?