I have a 2003 Tahoe that is getting a reman'd Heavy Duty trans from Monster transmission. Their recommendation is Dexron VI, since Dexron III is no longer licensed by GM and is just a useless label anyone can throw on a red ATF-ish substance. I ordered 9qts. of AC Delco Dexron VI ATF from RockAuto because they are the only ones who don't require sacrifice of your life savings or first born child to purchase a case, all they had was 9qts. I think I am going to need another 3qts. I have read and it seems mixing ATF's is ok so long as you know your intended outcome. My other 3qts. I intend to be Napa/Valvoline full synthetic Dexron VI ATF. Could this cause issues? From my research on here, it seems AC Delco VI isn't a full synthetic, that is the basis behind my question. Is it ok to mix semi and full syn ATF? I'm fairly confident in the answer, but I'd like a little confirmation.
Thanks guys. It's not often I have oil related questions, but when I do I come here because you guys are an amazing pool of knowledge and scientific data.
Thanks guys. It's not often I have oil related questions, but when I do I come here because you guys are an amazing pool of knowledge and scientific data.