has anybody put atf in a 5speed gear box ? today i thought i would change output transfer case seal and fluid and check/or change trans fluid . so i pull the trans fill plug and nothing so i pull the drain and its 3quarts red atf . has anybody done this or is the po not so bright.

 

all the 5 speeds i've owned all took atf, i think i'd check with what the trans called for though.

 

yes, he was dumb, it takes gear lube... specifically GL-3. the AX15 loves RP synchromesh.

 

not all of the jeeps took gear lube. some did come with atf, your trans might not have been original. atf will make the trans shift smoother but the gear lube will quiet the trans down if its making any noise. you can run either.

 

You're dumb.

Synchromesh will damage the synchros and other parts sure to the chemical compounds.

You should be putting 10w30 or the recommended fluid.

Do NOT use synchromesh.

 

I know of a bunch of guys running 10w30 in their AX5's and AX15's issue free, I ran Syncomesh in my Ax15's in my TJ and YJ

 

To be clear, its not going to explode the instant you shift.

But it will cause excessive wear.

 

any one buy a manual anymore?

 

I had such a problem trying to find out the correct fluid for my ax15 about a month or two ago, I searched all over the internet and couldnt find a clear response, and evyone said something different. I read somewere that syncromesh is great, except that it is gl-5 and it will wear away at bronze bushings in the transmission. Mopar has a fluid that is still gl-3 which is what SOME of them took. I never found a clear answer and used a pennzoil syncromesh I think, or the recomended weight of gear oil... I cant rember anymore. But tjats what I could gather that seemed reliable, call your local dodge/ jeep dealership would probly be your best bet or even a reputable transmission shop.

 

 

theres alot of "i thinks" and "i use", thats why I use manuals...

 

"I" used lucas gear oil and it allowed me to shift in to 2nd gear again...

 

you know synchromesh is recommended for MTs that specify motor oil, right?

 

I use lucases synthetic gear oil in mine... love it... just takes FOREVER. to fill lol

 

I had the same concerns back when I was fixing up my old VW bus. After many hours of research, it turns out modern GL5 will not actually corrode or wear bronze bushings more than GL4 (factory recommendation for my bus). I filled it up with GL5, daily drove that for 2 years. Still shifted like new when I sold it.