Re : Coolant lesser evil: Dexcool or glycol (for CGT)

[scott thomas]

I've been using dex cool for years. I wouldn't confuse misuse with
poor performance. The label clearly states that one must not mix dex
cool and conventional antifreeze. I use texaco and have always fully
flushed the cooling system of any of the green stuff. Furthermore, I
still swap the coolant out every 2 years. never any goo buildup.

Texaco's dex cool now says on the label that in addition to being
phospahte and silicate free, it's nitrate and borate free.

Without any other changes, on my current car, I swapped the very new
green stuff for dex cool and did notice the vehicle ran cooler. Done
many times.
---- Begin Original Message ----

From: Cris Carpenter <ccarpent at wisc.edu>
Sent: Mon, 05 May 2003 16:27:50 -0500
To: quattro at audifans.com
Subject: Re: Coolant lesser evil: Dexcool or glycol (for CGT)


Most big-name antifreeze companies are now producing lower-phosphate
or
phosphate-free antifreeze solutions that are just fine in any car,
especially if you replace it every 2 years or less. The Europeans did
kind
of lead the way, and the VW/Audi factory antifreezes of any particular
vintage are good, if expensive, examples. The same is true of gearbox
oils.
People who dutifully changed their original synthetic VW/Audi manual
tranny
fluid with readily available standard 80/90 gear lube at 60K in the
1980's
and 90's actually did their cars a dis-service.

Cris
81 Scirocco
Still looking for that perfect 87 4KQ
Retired VW/Audi technician (battling dreaded C-Nile virus)


  At 03:24 PM 5/5/2003, you wrote:

>Greetings,
>
>I have heard the coolant thread getting started on the list...
>I will be trying to get some Pentosin coolant for my newly purchased
CGT.
>However, I thought the main concern was the phosphate-free nature of
the
>factory stuff. So:
>
>In a pinch, where, say, Pentosin is not available, is it more
harmful to
>use orange dexcool mixed w/distilled, or green Prestone etc.
w/distilled?
>
>This is all new to me... my past Audis were always run on cheap green
>coolant, and I never saw any cooling issues even as they approached
200K.
>But I'm always looking for an improvement, so I thought I'd ask...
>
>Regards,
>Rob
>'86 CGT with a ton of new parts
>'91 200q hangar queen
>
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---- End Original Message ----




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