How does UV dye and antifreeze act as an anti-microbial? Neither one can... and tbh you don't need antifreeze or anything like it in a loop unless you're mixing alu and cu.
There's nothing with the radiator that would have anything to do with this problem, but you should flush it with some vinegar as suggested. What I don't get is why you know distilled is better yet you don't use it...
Bookmarks