[amazon.com](https://npw.clicorice.ca/links/4TqB0c) has the Prestone AS105 Radiator Flush and Cleaner – 22 oz for **$3.84** with free shipping on orders over $25 or free with Prime.

* 2-in-1 formula designed for light flushing and heavy-duty cleaning
* Cleans cooling systems to help prevent overheating
* Non-toxic, non-acidic formula is easy-to-use and safe for all cooling system metals