CarPlan Red Antifreeze is a superior quality ethylene glycol-based antifreeze and coolant that offers winter protection down to -33 degrees. Antifreeze is a simple and easy way not only to help regulate your engine during extreme temperatures but also to help prevent corrosion. This red antifreeze uses a synthetic process and additive package, offering superior corrosion resistance over extended service periods, which can also be left in the system for up to a minimum of five years.