Search on here sucks. I went to the store and got some mobile 1 75w-90 oil which is the same weight as the redline mtf. Now I finally discovered that t-45's are supposed to use automatic transmission fluid!? What do you guys use?
same 4 me.royal purple max atf works great
Amsoil ATF plus one bottle of Ford Friction modifier (in my T56, used the same thing in my T45)
royal purple sycromax...i changed mine last week and it shifts smoother. U can also go half atf and sycromax from what i've heard.
Mercon/dextron III ATF