TM 9-2320-361-20 3-41. COOLING SYSTEM SERVICING (Contd) 6. Check antifreeze solution for required lowest expected ambient temperature with optical antifreeze/battery tester (Table 3-1). 7. Install radiator cap (1) on filler neck (2). Table 3-1. Guide for Preparation of Antifreeze Solutions ETHYLENE-GLYCOL -60°F (-51 °C) INHIBITED MIL-A-46153 LOWEST EXPECTED AMBIENT QUARTS OF ARCTIC GRADE ANTIFREEZE TEMPERATURE ANTIFREEZE -90°F (-68°C) °F °C REQUIRED MlL-A-11755 +20 -7 9 Freezing point of -90°F (-68°C). +10 -12 11-3/4 Issued ready for use and must not 0 -18 16 be mixed with any other liquid. -10 -23 19 -20 -29 20-1/2 -30 -34 23-1/2 -40 -40 25 -50 -46 26-112 28 -55 -48 Use arctic grade Below -60 Below -51 antifreeze (-90°F) (-68°C) FOLLOW-ON TASK: Connect battery ground cable (para. 4-48). 3-95