Flex-a-lite product number 32060 is a good addition to any cooling system. It is 1/4 pipe
zinc anode for your cooling system that greatly reduces electrolysis caused by different metals ie. alumimum heads cast iron block. It lists for about $12 dollars and I really recommend it. I use a
zinc anode that hangs from the radiator cap ($about $20) and can not believe the codition of it each time I remove the cap. I am really glad the galvanic action is attacking my anode and not my radiator etc.
Bill Kozlow