How long does the AX15 usually last (mileage wise) under normal circumstances? I'm looking at buying a '94 Jeep Cherokee with 150,000 miles on it. The guy said he's never replaced the transmission, although he is the 2nd owner. I test drove it and it still shifts smooth and such. Feels fine. Just want to make sure it ain't gonna drop out on me a couple months down the road.

 

Don't think I've heard of any problems with the AX15, they're a damn good trans.

 

Both my cherokees got a 5-speed on was a 94 new one is a 97 not sure of the tranny but both have 250,000 miles on em with not a single problem you should be fine and a drove the crap out of my 94.

 

Mine has probably 225K on it right now.. no problem.

 

My Jeep has 285K on the clock. I barely started having some problems with the synchronizers on 1st and 4th. BUT it was my fault, I had a leak and the trans was running almost empty for 3 weeks, but that was 30K ago, and its still running strong, just have to shift a little differently.
I am currently saving money for the trans

 

The AX15 is a great tranny and will live a good long time if you treat it well. That means NO GL-5 fluids. Do a thread search on fluids to use. I use redline MTL, others use pennzoil synchromesh. Just make sure it is cool for yellow metals. We have bronze synchros and GL-5 eats them up. If it shifts well, keep treating it well and use the right fluid. You'll be in business for a good long time.

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My AX15 has 200,000 on it and I got the Jeep about 3 months ago and have been putting it through the tests since I got it...ya know, burnouts, clutch-kicks, powershifts. It's a good trans. I'll be doing a fluid change in a week or so, I plan on using Syncrhomesh, but the Mopar recommended fluid is regular old 10W30 motor oil. I'm sure it will last a long, long time.

 

Have a 94 with 236*** and no problems.

 

i have a 95 with 170k the syncros are worn out on it pretty bad. I think it was from the previous owner being a woman. Other than that its a great truck. Ive had it for 3 months now and have put about 3k on it.

 

no, thats way to thin should be 75w-90

 

Oh, really? See for yourself. I kid you not.

http://www.quadratec.com/products/52250_90.htm

Personally, I don't think it would last nearly as long as a gear oil such as Synchromesh or Redline MT90, but is nearly the same viscosity. I did a lot of googling when I heard this was what is recommended.

 

Im just going by what the owner's manuel says, just 10w-30 sounds kind of thin to me

 

It the same viscosity as 75w-90 supposedly. Mopar has been constantly changing their specs for the correct fluid, but some people said they had no problems using motor oil. I can see using motor oil because it does hold up to constant heat and compression and what not. The shear rate just seems lower compared to a gear oil. I would rather just spend the extra $20 on Synchromesh instead of hundreds on a new tranny if it doesn't hold up.

 

I got my jeep with 145000 on it and 1st and 2nd synchros are pretty shot, but still driveable. Don't know what kind of abuse (if any) it saw before i got it. everything else is well maintained and clean so i am guessing the po took pretty good care. Strength wise the AX-15 is pretty much bullet proof and rebuild kits are cheap and plentifull.