![Amazon.com: Antifreeze Refractometer for Glycol, Antifreeze, Coolant and Battery Acid. Antifreeze Tester for Measuring Freezing Point of Automobile Antifreeze and Battery Fluid Condition. : Automotive Amazon.com: Antifreeze Refractometer for Glycol, Antifreeze, Coolant and Battery Acid. Antifreeze Tester for Measuring Freezing Point of Automobile Antifreeze and Battery Fluid Condition. : Automotive](https://m.media-amazon.com/images/I/61n+298fkOL.jpg)
Amazon.com: Antifreeze Refractometer for Glycol, Antifreeze, Coolant and Battery Acid. Antifreeze Tester for Measuring Freezing Point of Automobile Antifreeze and Battery Fluid Condition. : Automotive
![CRAFTSMAN Automotive Antifreeze Tester in the Auto Diagnostic & Testing Tools department at Lowes.com CRAFTSMAN Automotive Antifreeze Tester in the Auto Diagnostic & Testing Tools department at Lowes.com](https://mobileimages.lowes.com/productimages/4acbaf9f-8581-4de8-86a6-27d80dd540e1/16646586.jpg)
CRAFTSMAN Automotive Antifreeze Tester in the Auto Diagnostic & Testing Tools department at Lowes.com
![CRAFTSMAN Automotive Antifreeze Tester in the Auto Diagnostic & Testing Tools department at Lowes.com CRAFTSMAN Automotive Antifreeze Tester in the Auto Diagnostic & Testing Tools department at Lowes.com](https://mobileimages.lowes.com/productimages/012d463c-a6b2-45da-a21c-26efdf8a5d44/16646585.jpg)
CRAFTSMAN Automotive Antifreeze Tester in the Auto Diagnostic & Testing Tools department at Lowes.com
![Not sure what to make of this, this is a coolant tester. Since were in summer is this a good result? What is the yellow ball doing? : r/MechanicAdvice Not sure what to make of this, this is a coolant tester. Since were in summer is this a good result? What is the yellow ball doing? : r/MechanicAdvice](https://preview.redd.it/2y7wzo9e84631.jpg?auto=webp&s=73efe0d225ab29afef47b28513c791dc759f502c)