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|
|100%||- 96||- 98||- 98||˚C|
examples of sources for above data:
https://patents.google.com/patent/WO2011153147A1/en table (~ 1/3 way into the document) https://www.engineeringtoolbox.com/methanol-water-d_987.html table
Thanks for any comment.