Quote:
Originally Posted by luvbowties
OK, all we theoreticians, I'd like some answers. Living in the southeast, I seldom face weather in the teens. Not so lately! Suppose one enters his truck in the early AM where a thermometer inside shows temps in the upper teens. Say you assume the coolant must be above this to stay liquid--just assume 20. If you immediately turn on heat to max as soon as you start up, would the 20-degree coolant allow the heater to immediately begin raising the temp inside the truck? I recently argued "No".
And now, where could there be a flaw in answering "Yes"?
I thought it was interesting.
Sam
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I'm not smart enough to attempt to answer this question, but it kinda fits into what I do day in and day out and I'm not afraid to look silly on the interweb so here is my thoughts.
I think the main flaw in "yes" is that the btus put off by the "20 degree coolant" (which would be minuscule) can't over come the load being put on the cab interior by the ambient temp outside. Meaning the heater can't overcome the heat loss.