*** Posted by john ***
Feel free to post any questions you might have about flying

*** Posted by Søren Nielsen ***
I would like to know why you are not using the same quantity of fuel in different altitudes?[Feel free to post any questions you might have about flying]

*** Posted by RUN ***
The higher you go, the thinner the air gets and therefore drag is reduced. An F-16 uses significant less fuel at higher altitudes than it does at sealevel.
RUN
[I would like to know why you are not using the same quantity of fuel in different altitudes?]