[youngsmith53]

Yeah guys I'm at 17k and want to swap out the trans fluid for some amsoil.

Amsoil Manual Transmission & Transaxle Gear Lube 75W-90

Synthetic Manual Transmission & Transaxle Gear Lube is recommended for applications requiring a 75W-85, 75W-90 or 80W-90 viscosity gear oil with any of the listed specifications:

API GL-4
Chrysler MS-9070
ZF TE-ML 02b, 17a
MAN 341-Z2 (formerly MAN 341 ML)
MB 235.5

that is the Amsoil that matched up with Mopar C635 (75W API GL4) transmission fluid...

Basically, the Mopar C635 transmission fluid is a 75W API GL4 gear oil, so in theory any 75W API GL4 fluid should work as a direct replacement. Amsoil does not appear to sell 75W oil, but Royal Purple has a 75W API GL4 oil called Synchromax if you're looking for something aftermarket.

you can also go with Redline as well as they have 75W API GL4 gear oil here - Red Line Synthetic Oil - Gear Oil for Manual Transmissions - MTL 75W80 GL-4 Gear Oil

 

[youngsmith53]

Wow I'm surprised it's 75w versus Syncromesh fluid! I just want to be clear it is a manual trans, not a ddct

From looking and researching... DDCT/MTX transmission fluid, are the same thing with our transmissions