A vinegar solution is only useful when the rad is new and you want to remove flux. That's not your case. I've used mayhems, both part 1 (similar to vinegar in function) and part 2 (regular loop cleaning). Part 1 did clean a lot of debris. As for part 2, I'm not really sure it was useful at all. Note that part 1 or vinegar is acid, and you don't want to run that in your loop for more than 1 hour. Some people use bicarbonate after vinegar to restore the ph to neutral levels.
10/24/16 at 3:09pm