There is an Anode in a radiator cap for this.
https://www.ebay.com/itm/Anti-Electrolysis-Sacrificial-Anode-13lbs-Radiator-Cap-FREE-1-3-DAY-SHIPPING/202005618264?hash=item2f08791e58:g:uhoAAOSwPt9eoHQe:sc:USPSPriority!83617!US!-1
Retired, US ARMY 1973-1994
ASE mechanic, Electrical 1994-1997
Retired GTE/VERIZON/FRONTIER 1997-2015
Posting cheap tech help (CRAP) here since Nov 97, 1000's of posts, some may be good.
03 Suzuki Burgman 650(Burger King) Scooter
65 Formula S Cuda
78 Little Red Express Truck
98 Buick Regal (wifes car)
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