Continue with the Radiator Cleaner for coolent?

[Pbert25]

Yeah, trying to clean up an neglected raditor on my 04 Grand Prix. The previous onwer wasn't all that good at matenace on it. I've been using Prestone Super Cleaner with the coolent and hopefully with I get it flushed, it won't be so bad.

 

[Tempest]

I would give RMI-25 a shot.