I'm gonna give my Trailblazer some more TLC this week by changing the tranny fluid and filter. I already replaced the front and rear diff fluid with Mobil 1 LS syn fluid, and replaced my t-case fluid with the recommended Auto Trak II. My tranny calls for Dex III, but I'm going with Dex VI and saw some Super Tech VI fluid at Wal Mart today. I've always stuck to "big brands" for my fluids, but I've heard good things about the ST fluid. I'm just not sure I wanna trust my 114k mile tranny with a "value fluid". Any thoughts on what I should use? I really wanna go with a synthetic fluid, so any suggestions please keep that in mind. Thanks.