Mayhems - PC Cleaning Kit - Blitz Complete - Radiator and Coolant Loop Cleaning, For Initial Setup and Coolant Change

The rad cleaner was great, but that's where the praise ends. Used this to clean out a new loop that included some secondhand parts and the instructions just said to rinse it through with distilled water, which I did. When I then added my coolant I got this green sludgey build up which I think was a chemical reaction with some cleaner still left in the system. Why would you create a product for cleaning loops with coolant in, that reacts with coolant and creates this gunk? It blocked my pump and other parts and I've had to take the loop apart multiple times trying to get rid of it all.

The best loop maintenance kit. Period. Cleared my radiators of left over dye I thought I’d already cleaned. It cleared the buildup on my distro plate as well. It’s the gold standard for loop maintenance