TM10-3930-660-20 Pints (Liters) of Ethylene Coolant Lowest  Expected Inhibited   Glycol Solution  Specific Ambient Temperature Per  Gal.  (Liters) Compound,  Antifreeze Gravity at 68° F “F (“C) of Coolant Arctic (20° c) +20 (+7) 1.5 (0.71) Issued  full  strength  and 1.022 +10  (-12) 2.0  (0.95) ready mixed for O to 45°F O  (-18) 1.038 2.75  (1.30) (-18 to -54’ C) tem- 1.047 -10  (-23) 3.25  (1.54) peratures  for  both  initial 1.055 -20  (-29) 3.50  (1.88) installation  and  replenish- 1.082 -30 (-34) 4.0 (1.90) ment of losses. DO NOT 1.073 -40  (-40) 4.25  (2.01  ) DILUTE WITH WATER OR -50  (-46) Arctic  antifreeze ANY OTHER SUBSTANCE. -60 (-51) preferred -75  (-80) Table 20-1. Freezing Points, Composition, and Specific Gravities of Military Antifreeze Materials. 1. Ensure that the cab skylight guard is positioned over the cab skylight and  latched. m. Ensure that the engine access doors are closed and latched. n. Fill-in DD Form 1397 completely and attach to a conspicuous part of the vehicle. 20-2. PREPARATION  FOR  LONG-TERM  STORAGE a. Perform the operator preventive maintenance checks and services (PMCS) contained in TM10-3930-660-10. b. Perform the organizational preventive maintenance checks and services (PMCS) contained in table 2-1 of chapter 2. c. Perform the lubrication contained in lubrication order LO10-3930-660-12. d. Thoroughly clean the vehicle. Use touch-up paint where necessary to prevent rust. e. Coat all exposed areas of the cylinder rods with grease to protect polished surfaces. If the vehicle has accumulated very low miles since the last scheduled lubrication service, do not drain and refill the transmission or axles (skip step f). f. Drain and refill the transmission and axles with new oil. g. Schedule the next preventive maintenance checks and services (PMCS) on DD Form 314* 20-2