Rep Power: 0

94 civic dx manual.
I haven't driven this car as my winter driver in a couple years, it has typically been my work commuter, so I dont remember how long it used to take to warm up in winter (michigan 20deg F). it seems that it is taking longer than i remember to reach operating temperature. My morning commute route: 15 total miles. first 1.5 mi is 50 mph frontage road. next 13 is highway. It takes until 5ish miles down the highway portion to reach full operating temp.

I leave the temp control switch at full cold with the blower off until it is warmed up to speed the heating process. I dont let the car run in the driveway for more than a minute while i scrape windows.

Background information fuel log - summer mpg avg: 51 previous winter avg: 47 this year 43 but i'm chalking the loss to 4 new tires with higher rolling resistance

My wifes car (97 civic) scanguage installed, takes just 2 miles total driving to reach full operating temp.

I really dont want to take the thermostat out just to test. my round-about test is: How long does your car take to warm up and what is your current ambient temperature?

 
Rep Power: 0

I am in co and it has been cold at night 15-25 if I dont let it set for 3-5 min in the driveway it will stay cold for 5-10 miles on really cold days (10 to -5 I block off the front. 1995 honda civic ex 1.6L

 
Rep Power: 368

15 min or more, maybe 7 miles when i was up in quebec, at the -36C mark...