THEPATRIOT

I want to change the ATF in my case.I know where to drain it from,do i fill it to the top plug on the back side under the NP tag?(want to be sure!)Also,what do i need for a wrench for the plug?Thanks

rivercrazy

Yes, fill til it runs out of top plug. You can just use a large cresent wrench.

THEPATRIOT

The plugs are flush with the case.

rivercrazy

?What year do you have?

THEPATRIOT

This is on my "97.

rivercrazy

OK you probably need a big allen head. Not sure what size. Anyone know?

Cherokee

If its the Allen wrench type, you'll need a 10 mm.

http://4x4xplor.com/trannyservice.html

refill with ATF +3.

THEPATRIOT

Thanks.Any reason not to use Dexron like my trans?

rivercrazy

Here's a good write-up on why. ATF +4 is actually better. Dump the Dexron!

http://www.allpar.com/mopar/transmissions/fluids.html

whowey

No.. there is no reason not to use Dexron in it...

Dexron is what was specified in the NP 231 straight from Jeep... It wasn't until Chrysler took over and wanted to sell more of their ATF+4 licensed fluid that they changed.

Cherokee

nice to hear some science behind it! thanks for the info river, i'll be sure to implement this.

OnlyInMyXJ22

x2

Honestly, it won't matter which you run in there, as long as you HAVE a lubricant lubing the internals.

BlueXJ

Find a bolt head that fits in the hex opening and put a couple of nuts on it and tighten one against the other (double nutting) then use a regular socket to remove the plug.

Stick with the Dextron. Why get another type of fluid which you don't want to accidently put in your AW-4.

rivercrazy

Dexron is an outdated lube. Sure...any fluid will work, but it just depends on how long you want your t-case (and tranny) to last.

Read the report...the numbers don't lie!

whowey

You mean Chrysler who recommended using Dex III in every AW-4 until the warranties expired on them, then started recommending ATF+4?? You mean Chrysler who recommended using GL-5 lubes in AX-15 transmissions even though it destroys the bronze synchros in them?? It's not like they have an ulterior motive to bash a fluid that GM makes money off of.... The comment that Dexron is outdated is foolish... Dexron is simply the marketing name that GM uses for its licensed auto tranny fluid. There isn't a single formulation of it. In fact there are two or three current Dexron formulas being offered. They are intended for different applications. Just like Ford has a handful of different formulas for it Mercon brand name transmission fluid.