with all that has been said, i'll offer proof of my a604 in my 95 caravan. it has almost 300k on the clock. when i got it, the trans was a "chrysler" rebuild. it had 111k on it then. i have used dextron 3 in it, changing the fluid & filter every year. there are no leaks, it shifts fine[transgo kit added shortly after i got it], and the only problems i had was replacement of the input/output sensors a couple of years ago. my trans guy says the ATSG recommends dextron 3 for severe cold weather if shifting problems occure. i don't know. mine seems to be the only one i have heard about that still works good using this fluid. why ?