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2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
[I have heard that a lot of trans shops either flush-n-fill places or ones that actually drop the pan use stuff like Mercon III and have an "additive" that makes it the same grade as ATF+4. If you ask me, there is nothing I would put in my trans to make the fluid "like" the real stuff. I would just use the real stuff. Some places do this because Mercon III is dirt cheap compared to ATF+4.
After my trans was rebuilt at a shop, that is what they wanted to do. I said the tranny calls for ATF+4 and Not ATF +3 so it shouldn't even be a question as to what to put in there. Also it should be included in the rebuild price. Moral of the story was I had to pay for the ATF+4 and aparently the only thing they could find was penzoil so thats what went in. Two years later on the tranny rebuild and still going strong. Im gonna drop the pan this summer and change the filter.
hmmm, well i know what i'm doing this weekend. I've had that mecron crap in my tranny for about a year now. while i'm at it i might do that check valve delete thing.