Originally Posted by chicagocpo
How about the first law of thermodynamics? I'm thinking about reduced mileage in cold weather AFTER the car warms up, that would have greater relative effect on longer trips. "Heat and work are forms of energy transfer." So, colder temperature would mean more energy used to maintain the engine at running temperature, leaving less for the "work" of moving the car once it got there.
Maybe there is a physicist out there who could comment on this?
except for the fact that colder air produces more power because its more dense as said above. I believe that the engine may pour more fuel but not much. What ends up happening is the car leans out. (this is safe in colder weather) Same principle behind water injection. Or the timing adjusts