T5 trans fluid type?

[stangman11]

hey guys I finally found a new trans and I am installing it in my car tomorrow. The only confusion I have had is that I cant find a straight answer of type of fluid it takes. Mercon, I,II,IV? I just want to put the ford recommended fluid back in so I dont have any problems.

 

[f8tlfiveo]

Basically any auto fluid, I just put mechron in mine

 

[TOOLOW91]

Mine has the cheapest part store atf in it and shifts like butter!

 

[Mustang5L5]

ATF-D3 is what it originally called out for

 

[Exile]

Synchromesh Transmission Fluid

I run Royal Purple Syncromax.

 

[Mustang5L5]

Synchromesh Transmission Fluid

That's not the Ford recommended fluid. Tremec in the past has recommened against it in the T-5 due to potential incompatiblity with the synchro blocker ring linings. Of course, many people run the fluid with no issue.

 

[Shakerhood]

Dex/Merc works fine for me.