Wow, the more I hear about these newer lubes the more confused I get. What
ever happened to good old, Smelly 80-90. Things sure were simpler back
then.
2:30 in the morning? No wonder you guys are confusing me. :)
You should be getting your sleep so you can get up at 7:00 in the morning,
wake your neighbors up when your backing out your driveway when you go for
your Holiday Healey ride to celebrate British Car Week and of course
Memorial day. I digress.
Mark
----- Original Message -----
From: "Dave & M" <rusd@velocitus.net>
To: "Bob Spidell" <bspidell@comcast.net>
Cc: <healeys@autox.team.net>
Sent: Monday, May 30, 2005 2:24 AM
Subject: Re: lubricants
> Hi Bob,
>
> My profound apology to you. You are correct.
> There is a 75W90 API GL-4 Gear Oil Called "MT-90" on the front label,
> and also a 75W90 API GL-5 Gear Oil called "75W90 Gear Oil".
> My mistake, sorry,
>
> Dave Russell
>
> Bob Spidell wrote:
> > Dave,
> >
> >
> > I got this off the RL website re: 75W-90 gear oil.
> >
> > "Our most popular gear oil, this is the preferred product in nearly
> > all car and light truck differentials, both conventional and
> > limited-slip. 75W90 is preferred for most racing applications. It
> > contains friction modifier which is recommended for limited-slip
> > units. 75W90 Gear Oil can be used in many transmissions and
> > transaxles; however, other Red Line lubricants have better frictional
> > properties for rapid synchronization. Exceeds API GL-5."
> >
> >
> http://www.redlineoil.com/products_gearlubricants.asp?subcatID=20&prodID=60
> >
> >
> >
> >
> > Sounds like this is appropriate for Healey diffs ... am I missing
> > something?
> >
> >
> >
> > bs
> >
>
> > Subject: Re: lubricants
> >
> >
> >> Hi Bob,
> >>
> >> I think most of your suggestions will work. Everyone seems to have
> >> their own "pet" ideas on the subject.
> >>
> >> I disagree with the RL 75W-90 in the differential. This is a API
> >> GL-4 rated oil & specifically says on the bottle "do not use in a
> >> rear wheel drive differential which requires a GL-5 lubricant".
> >> GL-5 has more sulfur additive which the high contact pressures in
> >> the differential require. Hypoid gears have a lot of sliding
> >> pressure contact. All but the early BN1's have hypoid gears &
> >> should use GL-5 rated lube.
> >>
> >> On the other end, sulfur compounds in the transmission are thought
> >> to shorten the life of the "brass" synchro rings so a GL-4 oil is
> >> usually used as you suggest.
> >>
> >> Dave Russell
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