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EXTENDED USE OF IMPROVED COOLING SYSTEM INHIBITOR-FIELD EVALUATION
COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD
Pagination or Media Count:
The object of this investigation is to determine if Federal Specification 0-1-490a,,, Corrosion Inhibitor is suitable for use in vehicle cooling systems for extended periods. The improved inhibitor was placed in the vehicle cooling systems with antifreeze compounds meeting Federal Specification 0-A-548a, Type I, or commercial materials similar to the Type I. The inhibitor was added at the rate of 1 ounce per 2 quarts of water used in making up the antifreeze solution. Four government vehicles and four private passenger cars were utilized for test. Solutions were checked every three months and if necessary the coolant freezing point, pH value and reserve alkalinity R.A. value were adjusted. Data indicates that inspection periods of longer than three months permits the coolant to get out of control. In the event the Army adopts the continued use of antifreeze solutions for two years, the coolant solutions must be checked every three months by technical personnel and adjusted, if necessary, to insure safe continued use.
APPROVED FOR PUBLIC RELEASE