Re: [Amc-list] trans broken in

[Wrambler242@xxxxxxxxxxx]

Have you searched for 30W synthetic?
As long as it doesn't have any friction modifiers in it that would eat brass/ bronze it should do fine.
Honestly the 75-90 I ran in my rears in the 96 stayed nice a free.
I could tell the difference in the winter.
With standard gear lube in real cold weather I could feel it hold back till things warmed up.
That was gone with synthetics.
The one brand that realy deals in obscure stuff that will honestly answer your questions is redline.
They have most of the info up online IIRC.
Not cheap, but your not going to need a lot of it either!

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrc II
" Chronic Pain Hurts"

 -------------- Original message ----------------------
From: Tom Jennings <tomj@xxxxxxx>
> On Thu, 10 Apr 2008, Ken Ames wrote:
> 
> > Did I miss why you're not using gear oil in this trans?
> > 75-90 or some such?
> 
> Energy loss. I know it's trivial... I would have put plain
> old 90W in except the TSM itself said "gear oil, or 30 weight
> engine oil".
> 
> I know that a manual transmission behind a powerless motor is
> not exactly in a stressful position, but synth lubricants are
> so superior, I figured a thin quality lube would be good.
> 
> It is, except for the synchro issue. It might be increasing wear
> on the bronze dog teeth if it's not dragging the gear up/down
> to speed quick enough. If you have any ideas there I'd love to
> hear them.
> 
> I might switch it to synth gear oil. It might make it shift
> faster and smoother.
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