Blackened04

I had the AMSoil garage fill it so hopefully it wasnt over/underfilled. It shifts very nicely once the car has warmed up a little.

Fobra

i hear gm snycrmesh is the way to go

lizzyfan

That's what I use in my TKO

Machmax777

ive heard people talk about synthetic eating synchros too, but ive never actually met anyone who has actually had this happen. ive had royal purple for about6 months now with now problems and a friend of mine has had it for over 2 years with zero problems. just my 2cents

Pest007

I had moble 1 syn in mine, it was noticably louder and really didn't like cold weather, so I switched back to the reg ATF tremec reccomends and noticed it did help noise and not so bad when cold.

OzzDOA

Dexron III/Mercon or Dexron V is what TTC (the people who build and design Tremec trannies) spec for the TR-3650. Its right in the most recent service manual. Synthetic fluids will soften/pit the synchros causing them to wear quicker. The proper fill level is 3.0 liters or 3.2 quarts.

cisurfer

yea it used to be 3.8 quarts but they changed it to 3.2 because it was too much, you can put about 4 quarts in and it still wont come outta the fill hole, only do 3.2

Quicktime_GT

hey.... somone listened to me... cool!
https://mustangforums.com/m_3706991/tm.htm

Romer

I did a bit of research around the net on transmission oil, and engine oil for that mattera while back. I read many tests by professionals and not so professionals and Amsoil was always on top or close. However Royal Purple was never on top, mediocre was about the the best they could muster. They are more advertising than the real thing. stay with Amsoil.

StickShifty

3.3 qts of syncromesh, shifts better in the cold.