EXTENDED USE OF IMPROVED COOLING SYSTEM INHIBITOR - FIELD EVALUATION

摘要

The object of this investigation is to determine if Federal Specification 0-1-490a, Corrosion Inhibitor is shamble for use in vehilcle 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 1, or commercial materials similar to the Type |. 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.