Freeway Antifreeze Check Store Availability. Product Description Freeway Antifreeze Product Information Freeway Antifreeze is a universal antifreeze with a Freeze Point of -8°C. When diluted 50/50 with water, the freeze point is reduced to -4°C This product is similar in composition to Coolstream Antifreeze except for the MEG content. Prevents overheatingStops rust and corrosionHelps prevent scale and sludge build-upLubricates water pumpMEG basedFully compatible with Aqua Clear PX