[DeTomaso] ZF Gear Lube Question

Tomas Gunnarsson guson at home.se
Sun May 30 16:10:31 EDT 2010


Go for it!

Tomas

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of Jorn C. Olsen
Sent: den 30 maj 2010 21:45
To: pantdino at aol.com; MikeLDrew at aol.com; JDeRyke at aol.com;
detomaso at realbig.com
Subject: Re: [DeTomaso] ZF Gear Lube Question


I`m a little confused!

I shall only use GL4 oil, correct?

Not GL5!



My local shop has a Castrol W80 GL4 oil!



J.C.



Fra: pantdino at aol.com [mailto:pantdino at aol.com]
Sendt: 30. mai 2010 20:32
Til: MikeLDrew at aol.com; JDeRyke at aol.com; joernco at online.no;
detomaso at realbig.com
Emne: Re: [DeTomaso] ZF Gear Lube Question



Or it could be argued that you prove my point.

If the oils have been "improved" in such a way that they are more slippery
than the GL5's of 1973, which is entirely likely, then they are LESS well
suited for this application.



I still say go with the NS oil.



Jim









-----Original Message-----
From: MikeLDrew at aol.com
To: pantdino at aol.com; JDeRyke at aol.com; joernco at online.no;
detomaso at realbig.com
Sent: Sun, May 30, 2010 2:41 am
Subject: Re: [DeTomaso] ZF Gear Lube Question


In a message dated 5/29/10 15 53 12, pantdino at aol.com writes:





One cannot assume that what was called GL5 in 1973 is the same thing being
sold today, so that is of questionable validity.



Uh...what?

GL5 is a very specific standard which is unchanged; it consists of a set of
highly standardized tests that must result in specific minimum values.  Your
statement is like saying that a 1973 inch might be longer or shorter than a
2010 inch!

Now, most oils today state that they exceed the GL5 standard (SAE J2360 is a
much more rigid standard, established initially by the US military, and one
that uses GL5 as its starting point, then adds to it with various
performance benchmark tests; most oils today meet this higher standard), so
while it may be true that most 2010 oils are better than 1973 oils, the
minimum standard that is established by GL5 is still the same standard.

http://www.lubrizol.com/DrivelineAdditives/AutomotiveGearOil/GL5.html

Mike

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