redline MT-90?

[oceansize]

seems like alot of people are running this stuff in the ax-15. my question is has anyone had bad luck with this stuff in a ax-15?

[RichP]

Other than the OEM stuff at $16 a quart it's the only thing you can run in them and the OEM is not synthetic.

[oceansize]

thanks Rich,
do you know anyone who has had probs with it?

[lawsoncl]

I ran a mix of Redline MTL90 and MTL it in my AX15. I went with the mix because it does get well below freezing here at times and the AX15 is known for cold shifting issues. Serious improvment over cheap stuff.

When I rebuilt the tranny (bad synchros when I got it) I put in GL4 from NAPA with the intention of draining and refilling with synthetic after a week of breakin. It shifted so bad with the cheap oil that I thought I screwed up the rebuild and was ready to tear it apart again. I decided to change to the Redline first and see what happened. All the shifting problems disappeared immediately and it shifted great. The first couple of 1-2 shifts were still a little stiff on those -15*F mornings though. :}

[RichP]

I ran a mix of Redline MTL90 and MTL it in my AX15. I went with the mix because it does get well below freezing here at times and the AX15 is known for cold shifting issues. Serious improvment over cheap stuff.

When I rebuilt the tranny (bad synchros when I got it) I put in GL4 from NAPA with the intention of draining and refilling with synthetic after a week of breakin. It shifted so bad with the cheap oil that I thought I screwed up the rebuild and was ready to tear it apart again. I decided to change to the Redline first and see what happened. All the shifting problems disappeared immediately and it shifted great. The first couple of 1-2 shifts were still a little stiff on those -15*F mornings though. :}

I had the same dramatic improvement when I changed the factory ATF for the Mobil-1 ATF in my 231, went into and out of 4Lo like greased lightning, no more having to coax it in. I have the old mobil-1 gear fluid in my 98, I bought a case of it about 6 years ago, back when it was GL3 and while it improved it it was still cold blooded on winter mornings. I've run out of the old mobil so I picked up some of the Redline MT-90, just need to get round to putting it in...

[oceansize]

lawson how much of a mix?

[lawsoncl]

lawson how much of a mix?

It's been a while, but I think I went 50/50.

[RichP]

It's been a while, but I think I went 50/50.

Why the mix ?

[lawsoncl]

To get it thinner at low temps to help the cold shifting (especially on those below zero winter mornings). My only complaint about the AX15 is that when cold, the 1-2 shifts were stiff. I didn't want to thin the hot temp viscosity too much, so I settle on mixing the MTL and MTL90 50/50.