My recollection, which is born out by the article at
http://www.vtr.org/maintain/oil-overview.html would suggest that Gear Oil
and Motor Oil use a different scale to measure viscosity. The chart on the
afore mentioned page would indicate that 80W gear oil has about the same
viscosity as 20 or 30 weight motor oil.
However, I'm sure that as in the case we just witnessed with bolt grades, no
doubt there are other factors to be considered.
Just my .02
<dnw>
1972 Midget
1998 Safari
1999 9-3
1964 (Me)
----- Original Message -----
From "Michael Knisely" <mdknisely at hotmail.com>
To: "David Dycus" <david.dycus@blackbox.com>; <spridgets@autox.team.net>
Sent: Wednesday, September 26, 2001 10:28 AM
Subject: Re: gearbox oil
> I'm no expert (I've only had my car since '80,) but I think 80W oil is a
no
> no in the gearbox. Kinda sticky in cool autumn weather I would think.
> Every manual I have ever read clearly calls for oil that is basically the
> same weight as your engine oil.
>
>
> > I've read that using modern 20/50 oil in the gearbox is not the same as
> > using circa 1967 20/50 oil, because of additives, etc. One site I looked
> at
> > recommends using "Castrol EP-80" (SAE 80W); any thoughts about this?
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