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-   -   ax5 gear oil!!!! (http://www.jeepforum.com/forum/f12/ax5-gear-oil-1548225/)

Mattias25 07-12-2013 07:00 PM

ax5 gear oil!!!!
 
is this gear oil safe for my ax5? it's royal purple 75w-90 max gear


http://shop.advanceautoparts.com/web...rchTerm=75w-90

UltimatE 07-12-2013 07:09 PM

Cheap 10w30 from walmart, save your money for real mods.

TSEJEEPERS 07-12-2013 07:35 PM

Quote:

Originally Posted by UltimatE (Post 15670782)
Cheap 10w30 from walmart, save your money for real mods.

Yep
The only other thing I would use would be Pennzoil Synchromesh.
http://www.pennzoil.com/other-car-pr...mission-fluid/
What ever you do use make sure it is yellow metal compatibility.

Mr.B 07-12-2013 09:25 PM

x2 on the synchromesh.

rodgers3 07-12-2013 09:43 PM

Quote:

Originally Posted by UltimatE (Post 15670782)
Cheap 10w30 from walmart, save your money for real mods.

x2

ashland82391 07-13-2013 12:14 AM

10w30

greyarea 07-13-2013 05:56 AM

I am running 80-90 GL-4 in my AX-15. I got it at NAPA.

Mr.B 07-13-2013 07:12 AM

Do some searching on here about Pennzoil Synchromesh, and AX-5's. Then ask yourself if you want to run anything else in it. I know I won't.

StanF 07-13-2013 07:19 AM

Quote:

Originally Posted by rodgers3

x2

x3 - cheapest Walmart 10w30

metalhead 07-13-2013 09:09 AM

The spec for the ax5 is 75w-90 gear oil. Why is 10w30 motor oil being suggested?

pete1991YJ 07-13-2013 09:14 AM

Quote:

Originally Posted by metalhead (Post 15672160)
The spec for the ax5 is 75w-90 gear oil. Why is 10w30 motor oil being suggested?

Because the factory put out a dealer service bulletin in like 1992 that changed the spec. Also from experience, these trannys don't like anything over 30 weight, I know cuz I tried it. Because they are built to such close tolerances and heavier oil needs a place to squeeze out into. Also because they aren't as rigid as an iron case 4-speed. The heavier oil actually increases gear and bearing wear because the tooth load on individual gear teeth goes way up and things start to overheat with the wrong oil.

UltimatE 07-13-2013 10:01 AM

Quote:

Originally Posted by Mr.B (Post 15671887)
Do some searching on here about Pennzoil Synchromesh, and AX-5's. Then ask yourself if you want to run anything else in it. I know I won't.

Actually, I haven't heard good things at all about Synchromesh. And given that the cheapest 10w30 provides absolutely perfect shifting from 80* down to -10*F in my transmission, I don't see why spending any extra money would be worth it.

http://www.jeepforum.com/forum/f12/1...trans-1100022/

Multiple people in that one thread report issues running it.

UZI4U 07-13-2013 10:08 AM

Quote:

Originally Posted by UltimatE (Post 15672315)
Actually, I haven't heard good things at all about Synchromesh. And given that the cheapest 10w30 provides absolutely perfect shifting from 80* down to -10*F in my transmission, I don't see why spending any extra money would be worth it.

http://www.jeepforum.com/forum/f12/1...trans-1100022/

Multiple people in that one thread report issues running it.

After pulling a valve cover off of a V8 that had been ran with Pennzoil all of it's life and finding, what could be best described as, a gelatin mold, I'll never run that crap in anything...to include my lawn mower.

metalhead 07-13-2013 12:24 PM

From talking to people at the jeep dealership I work at they say to use the 75w90 gear oil.

Mean Max 07-13-2013 12:33 PM

Quote:

Originally Posted by metalhead (Post 15672160)
The spec for the ax5 is 75w-90 gear oil. Why is 10w30 motor oil being suggested?

Conventional 10w-30 is the new spec for the AX-15. I use the cheap stuff from Wal-Mart. :)

Here's why I use 10W-30 motor oil in my AX-15.

The Mopar gear oil part number used to be 4897622aa, but when you search that part number you'll see it has been superceded by part number 4761839AC which comes up as 10w-30 motor oil. Here's a link to search the Mopar part numbers.

Discount Mopar Parts Jeep Dodge Chrysler parts & accessories with great service

It's the "new factory spec" lubricant.

Based on that, I use 10w-30 motor oil. I buy the Wal-Mart "Super Tech" store brand oil because it's cheap, meets all the API (American Petroleum Institute) grade qualifications and I change mine often, at least every 6 to 12 months.

Here's a link to the Jeep Engineers Q&A thread here on JF where I questioned the Jeep factory engineers on this very thing.

Here's my question post....
http://www.jeepforum.com/forum/f144/...ml#post8016389

And here's their reply.
http://www.jeepforum.com/forum/f144/...ml#post8016473

Max :cheers2:


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