Didn't we have a discussion a few years back about some using the tannin in
tea to coat the cooling system.  I think this idea was coming out of
Australia.  Has anyone tried this method of producing a film in the cooling
system?  Tannin does make a fairly durable coating.  I would guess that this
is not the only chemical that could be run through the cooling system to
produce a film that would slow electrolysis.

Bill
----- Original Message -----
From: "Frank Grunthaner" <FrankGRUN@AOL.COM>
.

The summary, Copper in a cooling circuit with Aluminum and steel will
corrode. The rate could be negligible (higher probability of personal meteor
strike than damaging corrosion of Cu component in 5 years or less).
Alternative is thick film hydrophobic film as I mentioned in an earlier
post.