Antifreeze OUTLANDISH idea.......

[Hoffman Anthony J A1C 552 CMS/MXMVC]

For what it's worth,

I recently did the head gaskets on a 99 Chevy Astro with a 4.3 Vortech and
95K on it. The antifreeze (Dexcool) was the original as far as I could tell.
The coolant passages had about 1/8 to 1/4 inch of "sludge" in them. It
looked like flakes of rust, but I couldn't tell for sure. In contrast, I
recently had the heads rebuilt on my Van, 210K, Green coolant changed three
times (in 210K), and they were clean as new. 

I'm not trying to provide a biased opinion, but I saw what I saw. There is
also another guy in the shop with a Chevy with Dexcool, and he had to have
his radiator taken out and flushed at about 80K, and it needs it again at
130K.

Tony Hoffman

-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On
Behalf Of cobram at juno.com
Sent: 22-Nov-2004 11:43 PM
To: quattro at audifans.com
Subject: Re: Antifreeze OUTLANDISH idea.......

Someday the archives will be searchable, till then I guess there will be
several topics that will never die.

FWIW I've been running the 5KS for 15+ years on good ole on sale at Kmart
Prestone green with absolutely no problems.  Same goes for the two V8Q's,
the 200TQA and the 90Q.  Both V8Q's still have the original factory
radiator hoses, bottom and top.  

I'd advise everyone to stay away from DexCool and other coolants that use
carboxylate or organic acid technology (OAT) as its main corrosion
inhibitor instead of the inorganic salt variety.  DexCool seems to be
prone to sludgeing, GM and the manufacturers of the stuff are slugging it
out in court, might be prudent to wait for concrete proof on either side
before risking this stuff.


BCNU,
http://www.geocities.com/cobramsri/
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