AX-15 Fluid?

[WickedXJ]

I hope that this is not a repost but I can not figure this shit out. My jeep guy said originally it was 75w-90 then changed to just 10w-30 in his dealership computer. Then EVERYWHERE online says dexron III mercon. I have both (synthetic 10w-30) so price is not an object as long as it is one of those two or ATF+4...I tend to buy too much when I do fluids on friends cars and just keep the extra. This is a solely trail jeep but it may become a tow rig in the near future. So can someone please clear this up for me before I get some advice to pour fucking catchup in the damn thing.

[1cleantj]

newest spec/reccomendation is GL 3/4 10w30 oil

[Bigbike]

Penzoil syncromesh works too. Redline m/t 90, 10w30. You have to use something that is yellow metal safe or you will destroy your synros. So ive read.