Re: Muriatic Acid to clean engine cooling system

Posted by fredkanter On 2016/7/16 14:21:48

It will not be feasible to use muriatic acid after you remove the freeze/core plugs and other items you mention. The acid/water you pour in the thermostat outlet will run out the dist tube and freeze plug openings instantly.
If it is to have any effect it must sit a while.

After the freeze plugs are removed the water jacket goes down over 1 inch. Scrape vigorously with a screwdriver and a coathanger, I found it full of sediment even after using a presssurewasher

I'm not a chemist but in reviewing the internet there are pros and cons. Most importantly it must be in a well ventilated area and goggles/gloves/ appropriate mask must be used