When I bought mine new, always ran 93, it was 17.2@80mph on the KO2s. I dropped down to the 15s with my MTs and offfset. I dropped another 1.5 mpg with the roof rack. Running sport mode with the Procal makes it worse obviously lol.
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First highway trip 11.9 mpg!!!
- Thread starter battering ram
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I think you mean "the computer will advance the timing, creating more power with 93"
Yes, agree with all of this! The first part goes to Cd not frontal area, and lifting a vehicle higher without making significant changes to underbody aero will not significantly change Cd and will affect frontal area in a very small way, resulting in no change, as I stated.Drag coefficient can be measurably improved if you can reduce to high pressure/turbulence under the vehicle and it is the reason that OEMs spend so much money on this. At first we saw Ford aggressively sacrificing ground clearance in their TRUCKS with front air dams well below standard bumper heights. This was done across the line-up including F250's and F350's. Now you even some of these with dynamic air dams as referenced in THIS post.
But you may have a good point insofar that the Bronco air is already SO messed up as it goes under the car, it's hard to imagine that it can get worse with another inch or two of height
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Run with 40"'s while towing in Florida - very thirsty vehicle! 8.8MPG FTW! If I recall after filling up the stats were 179 miles until empty lol
I'm impressed you did that well. I was down below 9 mpg for a tank or so trying to maintain ~83 mph in Utah with a roofbox and a head wind gusting to 40 mph
.If I had been towing I probably would have gotten about 4 mpg.
I used to live out in Utah for years, I have to agree with you on getting 4 MPG with the hills and wind out there!I'm impressed you did that well. I was down below 9 mpg for a tank or so trying to maintain ~83 mph in Utah with a roofbox and a head wind gusting to 40 mph
If I had been towing I probably would have gotten about 4 mpg.
I forgot to mention I was cruise control locked at 70 mph for 8.8 MPG for most of the trip. I did notice for the hell of it that when I dropped down to 65 I gained ~1.5 MPG for just that 5 mph decrease in speed.
Yeah, running at 65 mph is going to be way more efficient. I definitely had some of my most efficient tanks of gas I've seen yet running around the country in Idaho and Montana where I was only maxing out at around 60 mph but driving distance under low load.
Once you are routinely going 80 mph you are hosed. I often am getting passed driving around Arizona at 82 or 83 mph. We have the aerodynamics of a massive brick.
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Can't agree with this based on my experience. There are way to many variables in play. In my 2.3L 7MT 2-door Big Bend I average 22.00 MPG at 70 MPH. Driven sanely, I'm seeing little change in gas mileage overall based upon how I'm driving - as long as I'm driving like a sane person. Gas mileage is still inching up, and I'm at nearly 6K now, running top-tier 93 octane exclusively.
I know folks will get defensive, but the added weight of having a four-door, lift, big tires, camping gear, roof rack, bigger engine, an automatic and short gearing certainly all contribute to poor gas mileage.
Don't sweat the MPG's not going to improve much unless you slow down. HAHA!!Few days old , 300 miles on it. Did a 150 mile trip. All highway 76 mph. Got 11.9 mpg
im guessing dealer filled it with 87 octane and winds were somewhat strong. But I had hoped for 15mpg +
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It’s now averaging 15.2
IMO I had a very old tank of gas from the dealer and strong winds. My car sat 12 months on the dealer lot
IMO I had a very old tank of gas from the dealer and strong winds. My car sat 12 months on the dealer lot
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I don't think the extra weight for 4-doors makes much difference. Driving on flat terrain and not hills does. I've never been able to get better than 18 mpg (calculated), but then I'm going up and down hills.
Most recent trip of 120 miles at 65 on 37s and the 2.7 netted 16.3. if I kick it up to 80 like the freeways then it drops to 14 - 15.
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