[TR] Controversial subject...

[Bob Rochlin]

I had John Esposito rebuild my transmission about 7 years ago and then I added
an type A type overdrive.  i've used the 30 wt. non-detergent oil at his
recommendation ever since.  The transmission and overdrive have performed
perfectly since then.(about 5,000 miles a year)  An added benefit is that it
only costs a few bucks to change out the transmission oil each season for a
little maintenance overkill.     I don't know if the 30 wt is the cause, but
on cold mornings it does takes a few miles to "loosen up" the transmission
shifting.    Take care.   Bob Rochlin   72' TR6

> Date: Tue, 25 Mar 2014 13:30:46 -0700
> From: ahwahneetr at gmail.com
> To: fishplate at gmail.com
> CC: triumphs at autox.team.net
> Subject: Re: [TR] Controversial subject...
>
> The rebuilder of my OD (John Esposito) recommended (at the time at least)
> non-detergent straight 30W -- so that is what I used during the warranty
> period.
>
> Sometime after that I went with Redline MT90.
>
> Can't say what is best, just what I did.
>
> Geo
>
>
> On Tue, Mar 25, 2014 at 12:39 PM, Jeff Scarbrough
<fishplate at gmail.com>wrote:
>
> > At the risk of opening up a can of worms, or beating a dead horse...
> >
> > In my new overdrive transmission, I plan to run Brad Penn GL-4 80W90
> >
> > http://www.penngrade1.com/Products/Gear-Lubricants/GL4-SAE-80W90.aspx
> >
> > as directed by British Leyland since the car was new.  The rebuilder
> > of my overdrive unit says I should use 30-weight non-detergent oil.
> >
> > I understand that the weight of motor oil is measured differently than
> > the weight of gear oil, and that there isn't a whole lot of difference
> > in the viscosity of these oils.  Looking at the specs, I see that the
> > 80W90 has a viscosity of 15 cSt at 100C, while the 30 weight break-in
> > oil is 11.3, and the 20W50 motor oil is 20.0.
> >
> > I read all sorts of stories about pressures locking parts together,
> > etc., and I wonder if I am over-thinking this...
> >
> > Jeff Scarbrough
> > Corrosion Acres, Ga.
> >
> > ** triumphs at autox.team.net **
> >
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