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Re: Dexcool: Pro/con? WARNING

On Thu, 11 Mar 1999 only5kgt@uswest.net wrote:

> Having just received the new afterrun pump (thanks again to
> Chris Semple!) I am about to open the cooling system on
> infamous 87 5kcst- when a thought occurred to me- is that
> leave-it-in-for-ages Dex-cool coolant:
> Beneficial/detrimental/same effect but more expensive/
> as opposed to the good ol' green kind?


	Take it from a GM HVAC engineer who works side by side with the 
power train cooling engineers.   The green stuff is better and is NOT 
COMPATIBLE with the orange long life stuff.

	If you have green stuff in your system already, you CAN NOT 
change to orange since they form a gel when mixed.  Besides, the green 
stuff has better heat transfer properties.  The orange stuff only has one 
redeeming feature - it lasts along time.

	Personally, I wouldnt touch the orange stuff because it 
_stinks_.  Seriously, used orange coolant will turn your stomach inside 
out.  It has happend many times in the shop at work that a mechanic opens 
up the cooling system with orange stuff in it, and immediately tosses his 

Graydon D. Stuckey
'91 V8 Quattro 5-speed