Quote:
Originally Posted by mdosu
highly technical. 
but Rich is right, if you drive your car in a metro area like DC here, you will notice a difference in cabin air quality. I often find myself stuck behind stinky old cars, country-boy modified diesel trucks, and delivery trucks. I turn the vents to Auto recirculate and it detects the "stank" particles and immediately turns the outside vents off, and allows the filter to do the work. |
Sorry for the thread hijack, but I have always wondered whether the auto-recirc actually does anything.
Have you noticed it working? Is there any change to the indicator light, or...?