> 1.)  Once you start a system with one or the other, changing to from the
> green to the orange (or visa-versa) the second chemical installed in the
> system cannot propagate the coating throughout the system. Since, by
> replacing the first by the second, the first is no longer coating and
> re-coating the system....

What coating?  AFAIK, coolant is not supposed to leave any kind of coating on
your cooling system, especially after flushing it out.  Aluminum will corrode
to form an aluminum oxide layer, but that's the only coating that's supposed to
be there.

But what do I know...I'm just a chemical engineer.  :-)

Maybe we should ask VW van guru Dennis Haynes...he runs the orange stuff.

-Karl

Karl and Kristina Bloss, Trexlertown, PA
'87 Westfalia Weekender  "Beverley" - 186K miles
VW Mechanic list: http://www.enter.net/~bloss/vw/vwshops
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