Reply To: Is Prestone antifreeze really safe to mix with any color? › Forums › Mechanic & Workshop Advice › Is Prestone antifreeze really safe to mix with any color? May 12, 2025 at 7:07 pm #1238 Vlad I’d use this for an emergency, but wouldn’t run the car on it. I know on older BMWs if you use non-blue coolant it eats the lines and gaskets faster.