fluid type for A-518

70aarcuda said

mopar switch to atf-4 for all their overdrive trans....in fact they developed atf-4 for the overdrive and lockup converters....

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yep Ding ding you win the prize, and not sure what it would be, I used ATF4 Synthetic Castrol in my 727 and it runs perfect. and it will tear your head off when it shifts, no sloppy shifts here.