904 Transmission Fluid Recommendation

904 Transmission Fluid Recommendation

I know this thread hasn't been updated since 2012 but I got information that I think is relevant to this discussion.

One of the Dodge (FCA) dealership in Quebec City (JD Chrysler de Boischatel) is also a Mopar Service point. So, I contacted them to have their expertise (the Mopar service guys) and the director of their parts department owns a Dodge Dart 1974 like me.

I've asked the following: Knowing that the Dodge Dart 1974 owner's manual mentions "Dexron only" and that Chrysler switched from Dexron to ATF+4 in the 2000's what is Mopar's recommended fluid for a Torqueflite 904/727 ? (I've also mentionned that on some forums, such as this one, people claim that Type F has sharp shifts, that Dexron III destroys the TF or is the fluid of choice... that ATF+4 is superior, etc... lots of contradictory opinions).

His anwser (the original answer in French):

Bonjour M. Rodney

Ne vous méprenez pas, c’est de la Dexron II ou III qui va dans votre véhicule. Si vous en avez besoin, faites moi signe.
Ne mettez pas de ‘type F’ (votre véhicule n’est pas un Ford) ni de l’ATF+4 dans votre véhicule. L’ATF+4 existe depuis 2006 et à l’époque, les additifs dans l’huile à transmission étaient quasi inexistants et dans l’ATF+4, il y en a énormément. Vous allez user votre transmission prématurément!

Bien à vous.

The English traduction:

Greetings M. Rodney

Don't get misleaded, you need Dexron in your vehicle. If you need some, gimme a call. Do not use "Type F" (your vehicle isn't a Ford) nor ATF+4 in your car. the ATF+4 exists since 2006 and, back then, the additives in transmission fluids were near inexistant and, in ATF+4, there's lots of 'em. You'll wear your transmission prematurely.

Cheers,

I've made my own research on that topic and, after gathering all the needed info, will use Dexron-VI (full-synthetic) from licensed manufacturers. (Petro-Canada makes the original product for GM's own AC Delco).

So, look for a Dexron GM License number on the Dexron bottle you buy, you'll be 100% guaranteed the product is compliant with the actual spec, which is fully retrocompatible with previous Dexron specs.