Originally Posted by PonyBoyV6
Pardon me if im wrong, but when it's colder, doesnt gasoline condense? Perhaps you're burning more gas that way? Idk. Im not one of them learnin' doctors. But, the same things happened to me, im getting crappy mpgs when its been 11° outside. Lol
Woah, how'd this get posted here?
Yes. You're right. Fuel condenses.
Quick lesson: colder temps are better for racing or the generation of thrust but worse for mpg. The fuel condenses so more fuel is injected per cycle into the cylinder for compression. Because there is more fuel fed there is a more powerful combustion cycle driving the piston harder and faster. Colder temps also condenses air which is also needed. The more air (chiefly oxygen) present the more powerful the explosion sighing the cylinder. However, a propped ratio is needed because too much of one and there will not be efficient use of either, ie. running too rich or too lean.
It all make sense in my head. If I have miss stated something I am open to correction. It has been a while since I "studied" the process of the combustion engine.
But to answer you're question, yes, dense cold fuel will lower your mpg.