Are these antifreeze concentration testers reliable? If so, I think I am good for winter : r/MechanicAdvice

How much water do you think I need to drain to lower cya? Current

CRAFTSMAN Automotive Antifreeze Tester in the Auto Diagnostic

Function 1 Freezing Point Tester: The refractometer is measuring freezing point temperature of ethylene glycol or propylene based automobile

3-in-1 Antifreeze Refractometer in Fahrenheit Antifreeze Coolant Tester Refractometer for Checking Freezing Point of Automobile Antifreeze Systems and

Good coolant right?? Seems off the chart! Taken from radiator

Here's The ONLY WAY TO KNOW IF YOUR ANTIFREEZE COOLANT IS BAD

Check Your Antifreeze Before Winter

Safe to sleep in an idling car? : r/MechanicAdvice

Function 1: Measuring freezing point temperture of ethylene glycol or propylene glycol based automobile antifreeze coolant. Scale range: ethylene

3-in-1 Antifreeze Tester in Fahrenheit Scale for Checking Freezing Point and Concentration of Ethylene Glycol or Propylene Glycol Based Automobile

They've put more coolant concentrate than water in my car. What

My bf put water in the windshield wiper fluid container. Is this a

How to Test Your Coolant/Antifreeze

Good coolant right?? Seems off the chart! Taken from radiator

trouble with coolant flush : r/MechanicAdvice

Coolant Tester Accessory,Automotive Antifreeze Tester

Mechanic says add WATER to coolant expansion tank. : r/MechanicAdvice