[ale] [OT][Way OT] Industrial Power Question

[Ken Cochran]

I've never had a problem with plastic radiators but I have had
problems with other plastic cooling system components (pumps,
valves, etc.).  I'm told through auto owner/enthusiast/service
groups that the plastic cracking problem is caused by not using
proper antifreeze.  We use the *carmaker's own* antifreeze,
here's why: "Generic" antifreeze, while fine as antifreeze is
not properly *buffered* chemically as is the factory stuff,
even though it's likely made by the same company (e.g. Zerex).
Exposure over time (50-80k miles would be about right)
to coolant at the wrong pH causes various plastic cooling
system components (not just the radiator tanks) become brittle
and crack.  Since switching to the maker's own antifreeze
(in these cases, Mercedes & Volkswagen) we've had no cooling
system problems.

-kc

>Date: Mon, 09 Feb 2009 07:57:14 -0500
>From: Geoffrey <lists at serioustechnology.com>
>To: ale at ale.org
>Subject: Re: [ale] [OT][Way OT] Industrial Power Question
>
>We all have contrary stories.  I purchased two Mazda Proteges, one after
>the other.  Both exhibited the exact same problem.  The radiator cracked
>across the top at under 80K+ miles.  Who in their right mind makes a
>radiator out of plastic?
>
>That being said, I've been very pleased with my 1999 mazda pickup.  No
>major problems at this point, but then it's just under 80K.