What are some radiator cleaning chemicals?

Some chemicals used to clean radiators are propylene glycol and petroleum. While many other chemicals are available for the cleaning process, some vehicle owners use simple water to flush out their radiators, depending on the damage present.

After the initial cleaning chemicals are placed, it is recommended to follow up with a corrosion inhibitor solution, according to NAPA's Know How Blog. Different chemicals are applied to different types of build-up in the radiator, and not all solutions are designed to work well with all problems. Common types of cleaning flushes that vehicle owners perform on their radiators include oil flushes, hose drop flushes and power flushes.