[Jerry Bransford]

The forum's crystal ball is down for repairs so you're gonna have to tell us if you have a manual or automatic transmission, what engine you have, and what model year TJ you have.

 

[Jerry Bransford]

Ok, that helped. Your transmission is an Aisin AX-15 which requires a GL-3 or GL-4 75W-90 gear lube. The best recommendation for that I can offer is MT-90 from Redline which is a fully synthetic gear lube that meets all of the AX-15's specs and works very well in the AX-15 transmission.

 

[Jerry Bransford]

Yes, your tranny is an AX-15 and it has a 23 spline output shaft, that is the transmission that the 4.0L engine uses through 1999.

 

[Jerry Bransford]

What about a manual 2000 2.5l TJ? What type of tranny do I have?

Aisin AX-5 which was used on all the TJ's 2.5L engines until the 2.4L engine came out.

 

[Jerry Bransford]

so is it safe to assume that i have the AX-15 as well? my jeep is 1993 4.0 5speed manual....

Yep you have the AX-15 as well.

Since we got this going how about 2001 5 speed sport. Thanks.

Yours is the NV3550, a completely different type of transmission used after 1999.

 

[Jerry Bransford]

uhh can you break that down for me? I don't wanna walk into pepboys asking for 42rle and not knowing what it is short for

Pep Boys counter people won't know a 42RLE from a Boeing 757, all they need to know is what model year, engine type, and transmission... manual vs. automatic. If you give them a transmission model #, they'll give you a blank stare and ask for year, make, model, and transmission type... auto or manual... that is all you need to know for them to get parts for whatever.

 

[Jerry Bransford]

Your new 5-speed transmission is an Aisin AX-15, more commonly simply known as the AX-15. It requires either a GL-4 75W-90 gear lube or a synthetic 10W-30 motor oil. No worries on the seeming discrepancy on those two viscosities, gear lubes and motor oils are measured differently and they are both essentially the same viscosity in reality.

The very best lubricant I can recommend for your AX-15 is Redline MT-90 which is a fully synthetic GL-4 75W-90. You can get it at a discount from www.summitracing.com.

 

[Jerry Bransford]

Your transmission is the AX5 which is what came with the 2.5L engine. The AX15 only came with the 4.0L engine.

 

[Jerry Bransford]

Redline MT-90 would be very to beat for your AX5. Synthetic 10W-30 motor oil has also been approved for the AX5 and AX15. No worries, a 10W-30 motor oil is essentially the same viscosity as MT-90 which is a 75W-90 gear lube. Gear lubes and motor oils are measured on two different viscosity scales.

 

[Jerry Bransford]

what about a 2000 Jeep Wrangler Sahara 5 speed?

Also the NV3550.