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jbfay 12-17-2012 07:05 AM

tremec oil
I recently purchased an older superformance mk III. it has a tremec tranny, and the ony number i can find is on the case. Tremec MSK 11734. can anyone tell me which trans. i have, and more importantly, what is the correct oil for it. tks.

patf11 12-17-2012 08:02 AM

I believe it is a 3550, if so then it uses GM syncromesh.

Web site has lots of info:

You can also call phone jeff at tremec to verify:

jbfay 12-17-2012 11:01 AM

tremec oil
thanks for the reply, helps out

scootter 12-17-2012 02:40 PM

It is the GM Syncromesh oil. I changed mine out to Ultra Shift from Performance Unlimited. Cobra Valley's Chemicals - Ultra-Shift Transmission Lubricant
Watch out when you go to change the transmission oil when warm. It isn't much thicker then diesel fuel and comes flying out the hole!! I learned the hard way and got oil everywhere!!!

Bob In Ct 12-18-2012 05:18 AM

Tremec recommends GM Syncromesh. I used Redline MTL for 11 years with no issues.


carmine 12-18-2012 07:14 AM

I tried the Cobra Valley's Chemicals - Ultra-Shift Transmission Lubricant from Performance Unlimited.
Shifted like crap.

Went to Gm syncromesh and shifts way better.

trularin 12-18-2012 12:18 PM

Ultra shift!!!!

I agree - great shuff.


DAVID GAGNARD 12-18-2012 12:43 PM


Originally Posted by Bob In Ct (Post 1223272)
Tremec recommends GM Syncromesh. I used Redline MTL for 11 years with no issues.


17 years and problems with Redline MTL......


kinsey 12-18-2012 06:11 PM

i have a tremec tko a few years ago i was having some difficulty shifting, i was considering changing fluid brand. i talked to a tremec tech who told me they recommend using only mobil 1 synthetic transmission fluid.

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