truckinwagen
Active member
the biggest reason that I see for reduced mpg in cold temps
(winter) is more fuel burned at idle warming the engine up, and poor road conditions. any time you drive on a surface that is not flat, or has water on it or snow, or any loose material at all you are increasing rolling resistance to the tires. not to mention the energy that is expended warming up the transmission fluid and all the grease in the bearings. it is not the motor that is less efficient in the cold necicarily but rather all of the other environmental factors increasing load on the engine.
(winter) is more fuel burned at idle warming the engine up, and poor road conditions. any time you drive on a surface that is not flat, or has water on it or snow, or any loose material at all you are increasing rolling resistance to the tires. not to mention the energy that is expended warming up the transmission fluid and all the grease in the bearings. it is not the motor that is less efficient in the cold necicarily but rather all of the other environmental factors increasing load on the engine.