Date: Fri, 14 Nov 2008 19:41:17 -0800
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: Do GL-5 rated oils damage transmission brass syncronizers?
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
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Yeah Daryl,
I've been wanting to get some Sweepco, but haven't been able to find my
local dealer guy for it.
Would you happen to have a website or some way to find my local guy that
sells it, in Southern Oregon ? .......
Medford.
Seems I shouldn't have to call Swepco in Texas just to find out who sells it
around here.
thnx, if you can help, or anyone.......
Scott
----- Original Message -----
From: "aatransaxle" <daryl@AATRANSAXLE.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, November 14, 2008 7:25 PM
Subject: Re: Do GL-5 rated oils damage transmission brass syncronizers?
Despite the liklihood of being lambasted by the purists...
I am of the mind that the GL5 is OK to run in these things...
If you are of the mind that GL4 is the only thing to use...Use it by all
means...
I, on the other hand, have seen that most shops figure that GL5 is the new
and improved version of the gl4 and use it regularly without issues because
most are labeled GL 3,4 and 5
Only those of us on the various lists are typically even aware of a
difference.
Of the trannys I take apart to rebuild, the synchro's are not the biggest
failure point..It is the bearings going bad from apparently never changing
the oil..I mean never...Black as coal and lubricating like coal would...Gear
faces wear and the Ring/Pinion are worn drastically in those cases.
Good synchros are also moly coated, so the "brass" is not the contact point
with the gears.. Yes the 3/4 hubs break, but more and more have been changed
thru the years.
Bottom line is to use a name brand oil of your choice and change it every 3
yrs or so...
I also like synthetics for most of us who just drive ON the road and for
rigs that sit a lot. I use regular oil for my daily drivers and Full
synthetic for the ones that sit a lot.
Dino oil does retain moisture, I am told, by the oil technical info I have
read. You can get as technical as you want, but the bottom line is that I
see a few hundred trannys each year and fresh oil is more important for the
daily drivers...
Redline MT 90 is what the vanagons like for a general use oil. Good
synthetic makes the innards cleaner, hence less wear.
Swepco for example, it what the Porsche race guys use and it works well for
high HP rigs. It appears to makes the R&P wear less compared to a lighter
oil such as MT90. Have seen several 3.3 Subie rigs wear the R&P drastically
after a years hard use with lighter gear oil in them...Hence I have been
suggesting a thicker more racing type oil for the hard driven and high HP
rigs to help save them...I see 944 trannys all the time that are raced
weekly with very little wear using Swepco.
.. .IN MY HUMBLE non engineering OPINION by the way...
Daryl of AA Transaxle
(425) 788-4070
aatransaxle.com
86 Syncro Westy
Zetec in the trunk
----- Original Message -----
From: Ken
To: Syncro@yahoogroups.com
Sent: Friday, November 14, 2008 5:15 PM
Subject: [Syncro] re: Do GL-5 rated oils damage transmission brass
syncronizers?
Gday fellow syncronauts,
Over the years there has been lots of discussion, claims, hearsay, hype,
innuendo about GL-5 rated oils in transmissions with brass syncronizers.
It all started way back when VW by edict warned against using GL-5 rated
oils in such transmissions and ever since, many have accepted that edict
as the gospel truth, rightly or wrongly.
It's one thing to accept such an edict with blind faith, it's another to
know the truth from actual hands-on experience.
To try and put this issue to bed finally, my question is ...
Is there available anywhere on public record verifiable evidence from
more than just one recognised experienced hands-on transmission
rebuilder that GL-5 rated oils DO in fact deleteriously affect the
syncro transmission brass syncronizers?
Verifiable evidence please, with relevant links, would be welcomed by
the syncro community.
Cheers.
Ken
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