As someone with a vested interest in aluminium radiators (over a hundred manufactured and sold already this year) in a plus 8 use a 50/50 mix of blue glycol antifreeze and water. It’s what the engine was designed to run
A caveat however- if the engine has been filled with an OAT ( red, green, yellow, whatever) antifreeze, then run like for like. Mixing antifreezes causes the coolant to gel or crystallise and then you’re in a world of hurt
As to Evans Waterless- I wouldn’t...
it’s got poorer heat capacity/rejection than a traditional antifreeze/water blend, and it doesn’t boil because it has a very high boiling point, but that doesn’t mean your engine can’t overheat badly
