any auto tranny fluid as long as its ATF 3 or ATF 4 i'd recommend the atf 4 seen as its updated and its a synthetic... deff worth the upgrade.... but for sure don't use just any auto transmission fluid... its the fastest way to kill your tranny....
__________________
91 Chevy K1500 (current stock 305 to mildly built 350 swap in the works)
97 Olds minivan (wifes ride lol)
New Project 97 DOHC neon sport (Project daily driver :P)
thats a good question you never did say what tranny you had but seen as you were asking about atf I assumed you had an auto... but if manual you deff need to run syncromesh...
__________________
91 Chevy K1500 (current stock 305 to mildly built 350 swap in the works)
97 Olds minivan (wifes ride lol)
New Project 97 DOHC neon sport (Project daily driver :P)