List:
FYI, I know the use of GL4 and GL5 have been discussed
here before. This is what Redline told me and what
they recommend. MT-90 is listed as one of their
manual trans lubes.
> -----Original Message-----
> From: Dave Granquist [mailto:Dave@redlineoil.com]
> Sent: Wednesday, December 20, 2000 4:51 PM
> Subject: Re: Gearoil for diff with bronze parts
>
>
> >I have a sixties vintage Triumph with brass or
> bronze shims and bushingsin the differential. The
differential does not have a limited -slip
> >setup.
> >
> >I have read that GL5 gearoil will attack the bronze
> and that the sulfur and phosphates in the friction
modifiers used in limited-slip gearlube will attack
the bronze also.
> >
> >Should I use 75W90NS in my street driven Triumph so
> I don't damage the bronze parts?
> >
> >Thanks.
AND REDLINE SAYS:
> In the '60's Triumph differentials a GL-4 gear lube
> is called for, these don't contain a reactive
sulphur additive so would not cause corrosion or
pitting to brass or bronze.
>
> The Red Line GL-5 gear lubes (75W90 and 75W90NS)
don't contain as much reactive sulphur as others, so
doesn't corrode or pit the brass, bronze or copper,
only darkening of the surface at elevated
temperatures.
>
> In your Triumph differential as well as the
transmission, I would recommend the MT-90 (a GL-4).
>
> Thank you for your interest in Red Line Oil.
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