has anyone changed the front end/ transmission / transfer case and rear end to synthetic? if so what kind of fluid and how many quarts

 

The transfer case already has synthetic ATF+4 in it.

Be careful what you use in your 6 speed. I tried some synthetic in my Dakota's manual transmission back when it was a year or so old. The synchros didn't like it at all. Went back to the MOPAR stuff, and it went back to normal.

 

Im running Mobil 1 in the 3.8, 6 qts

Royal purple 75 w 90 in the d30 and d44, 1.25 qts approximately in the front. About 2.25 approximately in the rear.

Pennzoil synchromesh in the NSG 370. Roughly 2.5 qts

And Atf 4 in the t-case. Roughly 2 qts

Last change on the t-case at 30k and it looked brand new still, weird

 

thanks guys

 

I did Amsoil all around. And the amounts that are shown in the Project-JK write-ups are pretty accurate.

 

How are you finding the Penzoil in the tranny compared to the MOPAR fluid? I'd be interested to know if it's smoothed the shifts out (particularly the infamous 2nd gear crunch) or made any other noticable improvement in performance over the OEM fluid.

 

The Pennzoil stuff works fine. Same designation as the factory shiz, MS-9224. The tranny doesn't have any more noticeable shift improvement or degradation. Feels just as it did before, but runs really cool. I tried to get as much fluid in there as possible.

 

my choice!

 

I have changed the engine, transfer case, transmission, and both differentials. All Amsoil also. Good stuff.