wrote:

Use automotive anti freeze which is better for aluminium and the
different metals than domestic plumbing stuff.

Which is also toxic and illegal. Use the non-toxic kind. Walmart has
it in the RV section.

You didn't read the link did you? ;-)

One more time:

http://brownsmarina.com/tech-af.html



--
Regards,
Dave Brown
Brown's Marina Ltd
http://brownsmarina.com/