Okay so ive heard and read in a bunch of different places that redline should be used when synchros start going out. Well, my 1 to 2nd synchros is in pretty bad shape and now 3rd is starting to grind every once in a while. I want to save these before i abosulutley have to rebuild my tranny, as i really dont have the budget for that.

My question is, exactly what type of redline should i get for my tranny, and exactly how does redline help sychros? Does it have to do with the fact that synchros are basically friction plates? And redline has a high quallity friction modifier? Or am i completely off base here? i have the Zf-47 if it matters.

 

Well if your synchros are in fact damaged no fluid is going to fix that. I would drain the fluid and see what comes out with the fluid. If your in a relatively warm climate I would run the Red Line MTL. Otherwise the D4 ATF. There are no friction modifiers involved to my knowledge.

 

This is what I used in my trans, but I don't know if it will help with the synchros

 

I have just heard from a lot of people that it will help with bad synchros

 

Yeah, I don't know about that.

 

WTF. Where do half my posts go?

The Redline MTL is Highly praised to help notchy syncros.
I tried it in my 97, but did not work. I ended up spending $450 to rebuild the trans. Now it shift like butter