I can get 24 mpg or 12 mpg with my Ecoboost, my choice!
09-30-2012, 12:28 AM
#41
Senior Member
I think driving style does make a difference, but it's a stretch to see where driving styles differ so much that when using what each driver considers to be their best style for MPG, one has 150% - 200% the MPG through driving style alone.
It would seem to me that there must be a mechanical issue for some of these folks getting poor MPG. ..
It would seem to me that there must be a mechanical issue for some of these folks getting poor MPG. ..
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Adobe2X (09-30-2012)
09-30-2012, 12:33 AM
#42
Retired and loving it!
Thread Starter
On a side note, we get much worse mpg with the top down on our convertible than we do with the folding hardtop up......right around 8%......
09-30-2012, 05:29 PM
#43
It is always possible that there is some mechanical issue. After all, jknight bought a crew cab, 4x4, long bed, fully loaded truck, then got the shortest gears available. This certianly isn't helping the situation. But, I can easily change my driving style within the realm of "normal" and cause a shift in fuel consumption of 150%
09-30-2012, 09:03 PM
#44
Bingo!!! It takes a certain amount of energy (gasoline) to accelerate 6000 lb to 60 mph, whether you do it in 6 seconds or 60 seconds. Sure, there are minor differences in BSFC as a function of rate, but there are overriding physics at play. None of the energy is wasted until you touch the brake pedal. .
Source : also an engineer (and can do calculus)
09-30-2012, 09:39 PM
#45
I can get 14 mpg on mine or 19. Depends how I drive it. I average about 15.8. I enjoy the motor some times. It really is a joy to feel the rush of the speed with little or no sound. Feels like I am spooling up a jet.
09-30-2012, 11:10 PM
#47
Senior Member
Interesting Wikipedia article on this subject: http://en.wikipedia.org/wiki/Fuel_ec...zing_behaviors
Originally Posted by wikipedia
...Experts recommend accelerating quickly, but smoothly.[22]...So a fuel-efficient strategy is to anticipate what is happening ahead, and drive in such a way so as to minimize acceleration and braking, and maximize coasting time.
Originally Posted by wikipedia
automobile engines operate at only a fraction of their maximal efficiency, resulting in much lower fuel economy (or what is the same thing, much higher specific fuel consumption (SFC)).[34] Charts that show the SFC for every feasible combination of torque (or Brake Mean Effective Pressure) and RPM are called Brake specific fuel consumption maps. ..The high torque applied during pulse is usually very efficient.[35] This efficiently obtained kinetic energy is then used in the glide phase
10-01-2012, 07:30 PM
#49
Senior Member
Anyone else here just sometimes say to themselves.....the HECK with it, on THIS tankful, I am going to have fun! Feeling the EB push you back in the seat, or pulling onto the freeway, and you leave your foot in it for that last shift at 80 mph. Or power braking it, and breaking the tires loose so easily as you leave a couple of lights or stop signs......and seeing the tank average at maybe 12 .....
Then there are alway days like today.....we filled up with 87 octane Chevron about 15 miles from home. Reset the dash mpg as we left the station and drove it easily in stop and go traffic, coasted up to lights, and as we pulled into the driveway, the dash read 22.9 mpg. What a great truck!
Then there are alway days like today.....we filled up with 87 octane Chevron about 15 miles from home. Reset the dash mpg as we left the station and drove it easily in stop and go traffic, coasted up to lights, and as we pulled into the driveway, the dash read 22.9 mpg. What a great truck!
10-01-2012, 09:58 PM
#50
Senior Member
Strange, I have did a lot of traveling clear across the country and I keep track of every tank of gas and mileage. I have found that Chevron gasoline will give me up to 3 mpg more then any other kind. Problem is I can't find many Chevron gas stations. None here in Ohio. When ever I find one, I fill up no matter what the price is.