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• Precision instrument features high-quality optics with ultra smooth focusing
• Used for measuring the freezing point of either propylene or ethylene glycol based cooling systems
• Can also be used for checking the strength of electrolyte solution batteries

• Measures coolant freeze point, boil point and pH levels of 6, 7, 7.5, 8 and 11.
• Test works with both ethylene and propylene glycol-based coolants
• Quick and effective way to prevent coolant system damage

• Features a pressure release bar for releasing pressure build-up before removing the head from the neck
• Allows you to test today's car's higher pressure cooling system
• Set includes 1- 12559 spacer to drop in 1" deep filler necks for testing, 1- 12552 cap adaptor to check standard "A" size caps, and a complete easy to use instruction manual

• Checks for combustion leaks caused by bad head gaskets, cracked blocks, and cracked or warped heads
• With the engine running, the vehicle vacuum or the vacuum pump draws vapors through the indicating fluid for testing
• Fluid changes from blue to yellow when exposed to combustion gases from the radiator

• Required to test 1988 and newer BMW cooling systems with a threaded filler neck
• Works With 12270 Stant Cooling System Tester
• Professional quality