Over 5 million Mini's use this arrangement - transmission mounted below the
engine block.
Peter S
----- Original Message -----
From: Joe Curry <spitlist@gte.net>
To: Barry Schwartz <bschwart@pacbell.net>
Cc: <triumphs@autox.team.net>; <spitfires@autox.team.net>
Sent: Thursday, October 14, 1999 7:25 AM
Subject: Re: ? Motor oil usage in manual trannys
>
> Add to what Barry said, the fact that there have been certain cars
> produced through the years that have the gearbox built into the bottom
> end of the engine and they use the same oil for both purposes.
>
> Joe
>
> Barry Schwartz wrote:
> >
> > >I don't understand where the use of motor oils in transmissions is
> > >coming from. I have heard of people adding sawdust to their
> > >transmissions to quiet them down to but that doesn't mean I am going to
> > >do it. Using motor oil may be some mechanic's short term solution to a
> > >bad rebuild, I don't know.
> > *****************************************
> > I believe that the motor oil usage, related to British cars in general,
> > stems from those who have or have had MG's. Certain models of MG's (*
see
> > below) use regular motor oil in the transmission, which is (also I
believe)
> > specified in the service manual, for use in those trannys. (those who
own
> > MG's can validate that for me, and we KNOW who you are. . .:-})
> > However there may be specific differences which allow it's use in
> > those boxes. I would gather though, that the rear axle still specifies
> > that hypoid gear oil be used (and for good reason). The load's imposed
in
> > that assy are far greater and the shearing action of the hypoid gear is
> > much more severe. I'd bet that using motor oil in the rear end would
lead
> > to a very early demise of the ring and pinion. It is interesting to
note
> > that while hypoid gears have a much more aggressive "sliding action"
over a
> > broader area of gear teeth by their design, helical cut gears still do
the
> > same thing, but to a much lesser degree. It would also be interesting
to
> > see if the trend of using motor carries over to the later Midget which
uses
> > the Spitfire/Marina single rail gearbox. I'll bet that it specifies
gear
> > oil for those :-)
> > As for the sawdust, that's an old sellers/bad mechanics trick to quiet a
> > noisy transmission to sell, or get rid of the car, without fixing the
problem-
> >
> > *and quite possibly other models. My Borg/Warner T5 five speed manual,
> > specifies ONLY Dextron II/III automatic transmission fluid [fluif] be
used
> >
> > Barry Schwartz (San Diego) bschwart@pacbell.net
> >
> > 72 PI, V6 Spitfire (daily driver)
> > 70 GT6+ (when I don't drive the Spit)
> > 70 Spitfire (long term project)
>
> --
> "If you can't excel with talent, triumph with effort."
> -- Dave Weinbaum in National Enquirer
>
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