Transmission Fluid for G1 & G2

[jkroberts21]

Amsoil recommends an automatic transmission fluid for the gen 1: AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid
I even called them to confirm

But for the gen 2: AMSOIL 75W-90 Manual Transmission & Transaxle Gear Lube

Has anyone used AMSOIL automatic transmission fluid in their gen 1?

 

[GTS Dean]

The Gen 1s had different blocker rings in the synchros and require a Dexron III or better ATF fluid. The Gen 2s have carbon rings and can work well with GL4 multigrade synthetics for track or warm weather use.

 

[serafins]

Use a good 75w-90, just avoid GL5 rated fluids. I used anything I had on the shelf, 2qts redline GL4, 1qt BG synchroshift, 1qt auto trans fluid. Figured the auto trans fluid would add a little detergent capability to the mix and balance out the thicker synchroshift. A manual trans is very simple and will be fine as long as it’s got clean fluid and nothing that will eat internal parts like GL5

 

[daveg]

I went back to Dexron III, shifts much better now. If you get NGR, its not harmful just something you may hear.

A simple search reveals

AMSOIL vs MOPAR (Transmission Fluid)

Do you all have any experience or words of wisdom for AMSOIL vs MOPAR for transmission fluid? https://www.amazon.com/dp/B00BV4D182/ref=cm_sw_r_cp_api_fab_fgrBFbHNBMVVX vs https://www.amsoil.com/p/manual-transmission-transaxle-gear-lube-75w-90-mtg/?code=MTGPK-EA

www.viperclub.org

 

[Goggles Pizano]

Read sticker on tranny.
Do not use synthetic oil.
I posted this on multiple threads here and there is tons of threads about this