Review on 💪 Prestone Super Radiator Anti-Rust (AS170Y): The Ultimate Solution for Rust Prevention! by Freddie Newton

I called Prestone about this because I started seeing dirt in the radiator and coolant reservoir about a week after adding it. They said that this product has been out of production for at least 5 years. So the product was old and maybe it has something to do with it. I gave the container a good shake before putting it in my jeep.