Oh for goodness sakes...

please please if anyone here on list is an electrochemist speak up now.

There is so much ignorant speculation and about this topic that every
time it comes up, and it comes up regularly, nothing is learned,
nothing is proven.

I am no electrochemist, but I will state that electrochemical
environment of the vanagon cooling system is complicated.

And Don, show me the money, show me the data and the hard evidence.

boy, am I testy this morning :)

cheers

alistair

On 6-May-10, at 6:08 AM, Don Hanson wrote:

>

That is exactly why the heads do leak on this era German water-pumper
engines..  Heat+ dissimilar metals+a conductive solution to connect
it all
together=a recipe for corrosion.  The 993 Porsche motors have the same
problems as a WBX.  Change away with your antifreeze/coolant mix...your
motor is still attacking itself.still it is probably the best thing
to keep
the fresh coolant in there.

   I wonder if anyone has ever experimented with installing  sacrificial
anodes like are used in the marine world?  A couple of small bits of
zinc
somewhere accessible in the coolant circulation system might mitigate
the
corrosion problems you WBX owners encounter in the head area?

   Don Hanson