Prestone Antifreeze Tester at

Coolant temp ranges? Planet-9 Porsche Forum

Good coolant right?? Seems off the chart! Taken from radiator.Thanks : r/MechanicAdvice

Lot Of 2: Prestone DPR Antifreeze/Coolant Tester - Dutch Goat

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

Prestone Coolant/Antifreeze Tester - Motor factors Dublin, car accessories, vehicle parts

MotoMaster 29-0039-4 Antifreeze/Coolant Tester

Time to change coolant

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The dealer told me my coolant has become diluted this test now confuses me.

Which Antifreeze Tester do you use?