New 4 speed, need fluid recommendation
Thread Starter
Instructor
Joined: Sep 2000
Posts: 187
Likes: 4
From: Flagler Beach, FL
New 4 speed, need fluid recommendation
I am ashamed I have to ask this question. I just had my 1969 Muncie M20 rebuilt with all new gears. What would be the best weight fluid to use? Also, do it take about 2 quarts?
Thanks in Advance.
Revman
Thanks in Advance.
Revman
Last edited by Revman; Jun 4, 2006 at 09:38 AM.
Melting Slicks
Joined: Feb 2006
Posts: 3,428
Likes: 5
From: Japan
On the other hand, I just put cheap ol' Valvoline 80-90 in mine with a small bottle of teflon additive (not dangerous like putting Slick 50 in your motor; your tranny isn't pressure oiled). Works fine.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
My '72 here had a Muncie and it was very hard shifting, so I got a bright idea....
replaced fluids with 30 weight synthetic engine oil......
ran fine for over 2 years, slicked it's way through gears like a lo power import....
GENE
replaced fluids with 30 weight synthetic engine oil......
ran fine for over 2 years, slicked it's way through gears like a lo power import....
GENE
Melting Slicks
Joined: Mar 2005
Posts: 2,838
Likes: 10
From: Austin TX
George, the Chief engineer at Autogear strongly recommends mineral/convential 80-90 with sub-spec of MT-1 on their new Muncies. Valvoline meets his requirement. He says the synchros won't work as well with syns.
So,..that's what I use.
So,..that's what I use.
