Tremec 3550 fluid?

[93VertLX]

I just bought a used Tremec 3550 and was wondering what fluid I should use in it when I install it on Saturday. Also should my speedo gear from my 93 stock T5 work in this tremec?

 

[1SLO306]

they call for GM syncromesh but pensoil syncromesh and any dexron III will work

i dont know about the speedo gear tho

 

[jrichker]

I have a Tremec 3550, and I have always used GM Syncromesh. At $10 a quart, it is expensive, but it is the best for your 3550.

 

[Mustang5L5]

Tremec says either GM synchromesh or ATF/D3

 

[93 Pro 5.0]

i put my 3550 in with the stock gear. my car came stock with 3.08 gears and now has 3.73. with the stock speedo gear the guage is pretty close.

 

[85_SS_302_Coupe]

Unless something has changed since i bought mine, if you buy a Tremec and bust it, then send it back to Tremec with DIII in it, they won't honor the warantee. Go with GM Syncromesh just like they say. If you can't afford the fluid, well you might be in the wrong hobby. Expensive trany = expensive fluid.

 

[tunedin302]

GM synchromesh fluid (3 bottles but won't use all of it). I did change my speedo gear with the conversion and the # of teeth were different.

 

[bentley429]

GM synchromesh fluid (3 bottles but won't use all of it). I did change my speedo gear with the conversion and the # of teeth were different.

Right, just fill it until it starts to come out and your good.

 

[Grn92LX]

Yep, 3 qts of GM syncromesh and you will need the red 21 tooth speedo gear not the white 23 tooth speedo gear your T5 takes for 3.73's.