Wrangler JK manual trans fluid

[64bawagon]

My nephew has a 2012 Wrangler JK with the manual trans. He was looking for a recommendation for a fluid replacement. Royal purple and Mopar both have a syn fluid that lists for his application but they are both in the $20 per quart range. The trans is fussy on certain shifts (which I am told is typical of this model ?) He is not afraid to spend the extra money on the RP but he wants to make sure its worth the $$$$

 

[skyactiv]

Forget Royal Purple. Redline is known to make very good manual transmission fluids.
https://www.redlineoil.com/product.aspx?pid=45

 

[dlundblad]

Does it just have to be a GL-4?

NAPA has mineral Sta Lube GL4 (80w80 IIRC) for ~$20 a gallon.

 

[BrocLuno]

Redline MTL and never look back. The tranny will shift smooth and easy. It is the miracle drug of the stick shift world

 

[Chris142]

Its probably the synchromsh fluid mine takes. If so the Royal Purple oil is the best. It makes its shifting the smoothest and I have tried them all. The oe fluid is the worst.

 

[KD0AXS]

It is a Synchromesh type fluid. Chrysler spec is MS-9224, anything that says it meets this spec will be an acceptable replacement. I don't think the Royal Purple lists this spec, so I wouldn't use it.

I'd personally use Amsoil's Synchromesh fluid.

If you want something a bit cheaper, Pennzoil Synchromesh is an acceptable fluid.

 

[AntsinmyEyes]

if you want the best look into Ford Motorcraft Xt-Q5-MS. definitely pricey but also works great.

 

[mehullica]

Redline hands down

 

[SatinSilver]

Accord V6 manuals had a 3rd gear crunch that was helped by AC Delco FM(friction modified) mtf. Just make sure you get the FM stuff. A tsb from Honda recommended using this fluid. The Redline mtf was considered average in comparison per reports on the Accord forum.

 

[VNTS]

Amsoil MTF, run it in all my Getrags