The Trans(4T40E)in my 02 Malibu decided to pack it in so I ordered a Reman trans from GM which comes with a 3 year 60K warranty. The old tranny has been giving me problems for awhile now so last year expecting this thing to [censored] out I bought a case of Redline D4 ATF to use on the reman trans when I replaced it. Well,lo and behold the General now only offers Dex VI which is supposed to be used in the new tranny. Here's the question, should I just use the D4 in the new tranny or switch to the Redline Dex VI?
Fortunately I can exchange the D4 for the D6 if I want but I got to thinking that if I use the D4 and something goes wrong is GM going to not honor the warranty because I not using the recommended D6 in this trans. Maybe I'm just overthinking this but should I exchange the D4 for the D6 or just fill the trans with the D4 I already have. Any input is appreciated
Fortunately I can exchange the D4 for the D6 if I want but I got to thinking that if I use the D4 and something goes wrong is GM going to not honor the warranty because I not using the recommended D6 in this trans. Maybe I'm just overthinking this but should I exchange the D4 for the D6 or just fill the trans with the D4 I already have. Any input is appreciated