GM Sychromesh Fluid # 12345349

[Tommy]

Originally Posted by CamarosRus

1 qt Bottle with no viscosity on label

Ive tried reading up on this product with no conclusions

Anybody KNOW what manual transmissions this is meant for ??

I'm assuming its NOT correct for "old School" Muncie M21 etc

More than likely that oil you have is a GL5 and meant for the Tremec, T5 and most NV transmissions. The Muncie and BW T10 and NV4500 use the GL4. I wouldn't recommend using it in your Muncie. The synromesh fluid is generally a 5/30 while the GL4 is a 75/90.

Tommy