ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-33-12
Table 3-4. Freezing Points, Composition, and Specific Gravities of Military Antifreeze
PINTS (LITERS) OF
GALLONS (LITERS) OF
ARCTIC 2, 3
Issued full strength and
ready mixed for 0 to 65°F
(-17 8 to 18 3C) tempera-
tures for both Initial Installa-
tions and replenishment of
DO NOT DILUTE WITH
WATER OR ANY OTHER
Maximum protection is obtained at 60 percent volume (4 8 pints (2 27 liters)) of ethylene glycol per gallon (3.785
liters) of solution.
Military Specification MIL-A-11755 Arctic type, nonvolative antifreeze compound Is Intended for use In the cooling
system of liquid-cooled internal combustion engines. It is used for protection against freezing primarily in Arctic
regions where the ambient temperature is close to -40F (-40C) for extended periods or drops below, to as low as -
Fasten a tag near the radiator filler cap indicating the type antifreeze.
The test kit indicates DCA concentration by measuring nitrite content of a coolant sample, which provides cylinder
liner cavitation protection. Use of an antifreeze may contribute to nitrite content. However, most nitrite protection is
obtained from the DCA Inhibitor present In the disposable water filter elements (Figure 3-3) or in a pretreated coolant
supply. In general, a good nitrite reading indicates that the combined inhibitor packages contained in the antifreeze (If
used) and in the DCA are sufficient to ensure complete cooling system protection. Use coolant -rest Kit as follows:
(a) Drain sample of engine coolant and dilute one part with nine parts tap water Mix solution thoroughly.
(b) Fill the mixing vial supplied with kit to the 10 mil scribe mark. Add two or three drops of nitrite Indicator
solution B and swirl to attain a uniform red color.
(c) Add one drop of nitrite test solution A to the vial, being careful to hold the dispenser provided in a vertical
position Swirl to mix.
(d) Continue adding drops of nitrite test solution A. Keep count of the number of drops added and swirl vial
between each drop until the liquid color changes from red to a pale grey, green, or blue.
(e) Record the number of drops required for color change and consult Table 3-5 for coolant condition and