| Re: Lets lower speed limits because gas costs too much
The milage is affected by how hard the engine has to work to mantain the speed, and aerodynamic drag enters into this. However - there is an ideal speed to drive a car at to maximize the milage. My exploder gets the best milage on the interstate at about 70 with the cruise control set. The transmission is in overdrive, and spinning fast enough to lock up the torque converter. Slower then this and the converter isn't locked up. Faster then this and it has to drop down into passing gear to keep going.
Bigger factors on milage are tire pressure (can affect milage by up to 10%), driver mood (can affect milage by up to 25%), and engine tune (changing oil brand alone can get you a 1% or 2% change).
Unfortunately the author of the article is only looking a data that supports their point. |