How to measure the antifreeze coolant concentration in your car using a refractometer

How to measure the antifreeze coolant concentration in your car using a refractometer.
What is the mixture of coolant to distilled water?

[@UnknownMelodies0]

Great video, thanks for the help

[@Babayaga-pf5dt]

Thanks buddy, exactly what l was looking for!

[@mygiguser]

How much water did you add to your car? BMW needs 50/50

[@joeyc6398]

You didn't calibrate the refractometer with distilled water first.