Although I've never installed one, a anode is a good idea, just like with our boats. Especially if a engine has a lot of different metals.
How about 2 or 3 core's ?
Metal or brass ?
Reverse flow ?
Percentage of
antifreeze ?
Green, purple, red,....
No
antifreeze, just house water or R.O water and a conditioner ?
Or waterless.
Evans coolant ?