Re: CLR to clean out Engine Waterways

Posted by patgreen On 2010/12/3 15:08:18

Some years ago (20?) a neighbor who worked for Peak gave me a product called Peak Purge. It was a cooling system cleaner that was organic and biodegradable, safe for aluminum. Wow did it clean beautifully.

You could toss it in the radiator, drive 100 miles and drain the system and watch the crud pour out.

I can't find it these days; does it still exist? Strikes me it would be excellent for old cooling systems because it got both rust and the whitish crud that collects in radiators (calcium?)

Anyone?