![Professional Automotive Antifreeze Tester Portable Deluxe Battery Fluid Tester Compatible Coolant Tester Hydrometer Tester - AliExpress Professional Automotive Antifreeze Tester Portable Deluxe Battery Fluid Tester Compatible Coolant Tester Hydrometer Tester - AliExpress](https://ae01.alicdn.com/kf/Sbd5e8e123bc54b86abaa65130d33d4eda.jpg_640x640Q90.jpg_.webp)
Professional Automotive Antifreeze Tester Portable Deluxe Battery Fluid Tester Compatible Coolant Tester Hydrometer Tester - AliExpress
![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)
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
![Coolant antifreeze tester - does coolant temperature matter? - Maintenance/Repairs - Car Talk Community Coolant antifreeze tester - does coolant temperature matter? - Maintenance/Repairs - Car Talk Community](https://global.discourse-cdn.com/cartalk/original/2X/2/20b60465e8f368b4d63855cbae3932ec8aebac73.png)