Wynn’s Summer & Winter 20% Antifreeze/Coolant is a premium ready-to-use, high performance coolant and antifreeze. It is a complete replacement package making it suitable for all vehicles; those that require either organic or inorganic coolants. It is formulated with a superior Euro specification additive package. MEG-based, NAP-free hybrid coolant/antifreeze, Freezing Point: - 7 °C (ASTM D1177), ASTM D3306, ASTM D4985, SAE J1034, BS 6580 (2010) and AFNOR NF R15-601.