Keeping yourself warm/saving engine heat and MPG
 

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:eek:

:rolleyes: You could of sent me a PM.....

and pass up all that pun/innuendo fun???

always remember, i'm laughing with you, not at you.

HAhahahahahaha!!!

hahahaha...

oh my...

BTW to the OP... this is interesting. Thanks for the deas. I have noticed something similar with my Civic.

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and watch what go up and down?

Why, the "eyebrows" of prudes, of course.

In the AM when the temps here can be as low as the CHILLY and DAMP 50 degrees, I do not run the heater and keep the temp selector to the cold setting so as to keep as much heat in the coolant as possible. Ah, winter in Cali is tough! ... later in my commute when the engine is at running temp, I switch to the selector to the red temps and sometimes run the heater fan on low when climbing steep hills to keep the coolant temp above 170s and under 200.

I've always figured that it didn't really matter where the temp knob was set as far as mpg and warm-up time; I thought if the blower was off it wouldn't exchange enough heat to really matter. But then, I didn't have the instrumentation to really check it out either.

The difference in warm-up time between heater control cold or heater hot can't be much, can it? And after the engine is warm I don't see how heater control knob position can affect mpg at all. :confused: However I can see a negative mpg effect from the alternator load increasing with higher blower settings.