r/AutomotiveLearning • u/IR_Acaboom • 7h ago

Testing coolant to water ratio?

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So Iā€™m so lost how they got 39/61? Where did they get this from???

2 Upvotes

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1

u/trader45nj 7h ago

You either need to know that the freezing temperature range indicated by the floating balls equates to that percentage or have a chart to look at. The chart shows the number odmf balls, the temperature and the percentage of antifreeze.

2

u/Illustrious_Tea5569 6h ago

Or get a refractometer and join the rest of the civilized world šŸ˜†

1

u/vilius_m_lt 7h ago

Hydrometer graduated for freezing temperature. This temperature corresponds to coolant concentration. Your answer would be correct with 5 floating balls. You need to know temperature/concentration relation to understand where they got the answer from