Synthetic Transmission Oil

[mbulriss]

OK then,... how about this piece of mis-information, in the form of a Service
Advisory *direct* from Allison Corporation as far back as 2001:
http://www.allisontransmission.com/docum...ev%20E.pdf

I assume your HTB748 is part of the HT 700 family of transmissions, just as
MT654CR was part of their MT 600 family of trannys. I note from the Allison
chart that the first recommendation from Allison is for the synthetic fluid, and
yes I will assume Allison has more experience than the forum.

SI will also note that my local Allison house told me to "get that ATF cr*p out
of there and put C-4 in - that's what we use". Some people live in the past and
'do it the way we have always done it'. I chose to go with the manufacturer's
recommendation.

Sorry for trying to help.

Mike Bulriss
1991 WB40 "Texas Minivan"
San Antonio, TX

--- In WanderlodgeForum@yahoogroups.com, Curt Sprenger wrote:
>
> Mike,
>
> I'm not pulling this info. out of a hat...it comes from a well established
> Allison dealer. Their experience with transmission issues is far greater
> than the forum.
>
>
> Curt Sprenger
> 1987 PT38 8V92 "MacAttack Racing"
> Anaheim Hills, CA
>
>
>
> On Wed, Oct 21, 2009 at 10:51 AM, mbulriss <mbulriss@...> wrote:
>
> >
> >
> > Curt,
> >
> > They ought to put a new pan gasket on when they service the tranny. My 83
> > PT40 had Amsoil synthetic in the tranny (as well as the engine, differential
> > and genset) for most of the 9 years I owned it after I changed it over in
> > year 1. The only leak I had was the slobber tubes.
> >
> > Sounds like more anti-synthetic folklore to me.
> >
> > Mike Bulriss
> > 1991 WB40 "Texas Minivan"
> > San Antonio, TX
> >
> >
> > --- In WanderlodgeForum@yahoogroups.com,
> > Curt Sprenger wrote:
> > >
> > > FYI...Talking with the Dartco Allison shop this morning. They do not
> > > recommend synthetic oil in the older transmissions. Their experience is
> > the
> > > older gaskets do not like the synthetic and the gaskets start leaking the
> > > stuff.
> > >
> > >
> > > Curt Sprenger
> > > 1987 PT38 8V92 "MacAttack Racing"
> > > Anaheim Hills, CA
> > >
> >
> >
> >
>