ARMY TM 9-6115-670-14&P 4-4 Table 4-1.  Freezing Points, Composition, and Specific Gravities of Military Antifreeze Materials Lowest Ambient Temperature +20F (-6.67C) Pints (liters) Glycol/Gallon (liter) Coolant Compound Antifreeze Ethylene Coolant Specific Gravity @ 68F (20C) +20F (-6.67C) 1-1/2 (0.19) Issued at full strength and ready mixed for 0° to - 65F (-17.8 to -53.9C) temperatures for both initial installation and replenishment of losses. 1.022 +10F (-12.22C) 2 (0.25) 1.036 0F (-17.78C) 2-3/4 (0.34) 1.047 -10F (-23.33C) 3-1/4 (0.41) 1.055 -20F (-28.89C) 3-1/2 (0.43) 1.062 -30F (-34.44C) 4 (0.49) 1.067 -40F (-40C) 4-1/4 (0.53) 1.073 Section IV. EQUIPMENT/USER FITTING INSTRUCTIONS There are no equipment/user fitting instructions associated with the APU. Section V.  UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) 4.7 INTRODUCTION TO UNIT PMCS TABLE. 4.7.1. General.  Table 2-2 (PMCS table) has been provided so you can keep your equipment in good operating condition and ready for its primary mission. 4.7.2. PMCS Procedures.  The PMCS table is divided into five columns.  Each column is explained in the following paragraphs. 4.7.2.1 Item No. Column.  Numbers in this column are for reference.  When completing DA Form 2404 (Equipment Inspection and Maintenance Worksheet), include the item number for the check/service indicating a fault.  Item numbers also appear in the order that you must perform checks and services for the intervals listed. 4.7.2.2    Inverval Column.  This column informs you when you must perform the procedure in the procedure column.  "BEFORE" procedures must be completed before you operate the equipment for its intended mission.  "DURING" procedures must be completed during the time you are operating the equipment for its intended mission.  "AFTER" procedures must be completed immediately after you have operated the equipment.  Perform "WEEKLY" procedures at the listed interval. 4.7.2.3 Location, Item to Check/Service Column. This column lists the location and the item to be checked or serviced.  The item location is underlined. NOTE Maximum protection is obtained at 60% by volume (4.8 pints (2.256 liters)) of ethylene per gallon (liter) of solution.