[Vwdiesel] Transmission fluid draining

[Area31 Research Facility]

I'm assuming the designation GL here means Gear Lubricant?  How does one
determine if their gear oil is Gl-4, or GL-5?

I have some Shell EP-50 (that's all that is marked on the top of the drum,
and I gather that means Extreme Pressure) and it is old (yeah OK so is all
dino oil by definition but I think this stuff was refined maybe in the 60's
so it is likly not synthetic)..  I got a couple of sealed 45 gallon drums of
the stuff back on the 80's.  It has a strong sulphur smell and is quite thin
so I'm guessing it is a straight 50 weight hypoid gear oil.  I have used it
in car rear differentials and it is truly an excellent high pressure contact
lubricant.  It is nice and loose in the winter and doesn't lose protection
in the summer heat.

I'm wondering if I dare use it in my Jetta 5-speed manual.  I'm only wanting
a thinner oil in there for better fuel economy.  If it makes it shift nicer
that would be a bonus.  My car isn't on the road yet and the test drive was
the only time I got to shift it while driving so I don't know if shifting is
as good as it can be.

Rob

----- Original Message -----
From: "David Cook" <vwdieselbunny at yahoo.com>
To: "diesel list" <vwdiesel at vwfans.com>
Sent: Saturday, May 28, 2005 7:58 PM
Subject: Re: [Vwdiesel] Transmission fluid draining


> I cannot 100% verify anything, but I do know that I
> had TWO Beetle trannys die (discentigrate is a better
> term) in less than two weeks after draining and
> filling with GL-5.
>
> A very knowledgeable VW guy advised me that it was the
> GL-5 eating the yellow metals in the trannys.
>
> I can tell you that none of my VW's trannys will ever
> see GL-5.
>
> David
>
> --- paulr <reichp at earthlink.net> wrote:
> > I don't know if this is an "old wives tale", but I
> > think I read somewhere that the additives in GL-5
> > attack the (bronze???) synchronizers in the
> > tranny????
> >
> > Paul
> >
>
> David Cook
> Red '86 Cabriolet Diesel Powered
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>
>
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