Posted by Carl on September 23, 2002 at 15:00:22: In Reply to: Posted by on September 23, 2002 at 08:50:28: The 160 degree thermostat was used for alcohol based anti-freeze because of its low boiling point. All modern anti-freeze is glycol based (either ethylene or proplyene) and has a much higher boiling point so the thermostats now are either 180 or 190 degrees. Hope this is of some help, Carl
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