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Extending an exploration of windshield washer-fluid choices to freezing points of methanol-water mixes, all web-sources located agreed to within a couple of degrees from 0-60% w/w, yet above this proportion (and below 100%), repeatedly came across conflicting data (which fell into three groups). (Yes, the disagreements are all outside the range of winter driving on this planet - except perhaps for around Vostok Station...)
| w/w | various graphs by eye | various tables | engineering toolbox table | all˚C |
|---|---|---|---|---|
| 60% | - 71 | - 71 | - 71 | ˚C |
| 70% | -102 | -137 | - 82 | ˚C |
| 80% | -116 | -143 | - 87 | ˚C |
| 90% | -108 | -146 | - 90 | ˚C |
| 100% | - 96 | - 98 | - 98 | ˚C |
2026-10-24
