Stanley Proto JFF106A Proto Ethylene Glycol Antifreeze Tester
Stanley JFF106A Proto Ethylene Glycol Antifreeze Tester Professional size 16-inch disc-type antifreeze tester. Easy to read magnified plastic barrel. Tests all ethylene glycol based antifreeze including Dex-Cool, hot or cold. The degree of coolant protection is indicated by the number of floating discs. Temperature compensating with Fahrenheit and Celsius scales from +32°F to - 60° F.
