Does a car have more power if the fuel is cold?

Question

Cars tend to make more power if the Air is cold, but how about the fuel?

Answer 1

Scientifically Yes, but not any measurable amount.
The reason is this, as the cold fuel enters the fuel injectors/carberator, the expansion of the fuel with the air, will cool the air down, making it more dense, thus the engine can make more power by the air being more dense.
Realalistically, no real change becasue the engine is hot, the small amount of fuel that is passed to the carbertuer will warm up by the heat of the engine, and that small amount will
not decrease the large amount of air by a relative amount to increase power by a measurable amount.

For the cold cans listed below, this is for racing applications, where the amount of fuel used is much higher. When running an engine at redine, any difference in fuel temp can make a difference of a small amount, enough to win, plus these make fuel very very cold, so it resists the warming of the engine.

Answer 2

Colder air or fuel is more dense so it's able to produce more power....that is why racers uses "cool cans" in the fuel system to cool down fuel for a race.
http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_49730_-1

Answer 3

the fuel temp doesnt really matter. if u want more power go with a higher octane fuel

Answer 4

it would be in your best interest if you have a room temprature, however the engine runs all the same unless you are talking about extreme conditions.