Which tune to use on a long trip?
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From: Among javelinas and scorpions in Zoniestan
Hardly, but I expect you might be able to guess who I was referring to. 
- Jack
- Jack
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From: Alaska
Nobody cruises at 75-80 for fuel economy.
I can get 18mpg at 65 all day long, probably touch 20 if I could drive 55 ( but I can't lol) I'm getting a little better mpg with using premium octane on level 3. Why don't you do that one way, and a tank of 87 on the way back? And whats your range, 2 tanks for 3.5 hrs of driving seems like a lot, I have a good 500mi/tank with mine.
I can get 18mpg at 65 all day long, probably touch 20 if I could drive 55 ( but I can't lol) I'm getting a little better mpg with using premium octane on level 3. Why don't you do that one way, and a tank of 87 on the way back? And whats your range, 2 tanks for 3.5 hrs of driving seems like a lot, I have a good 500mi/tank with mine.
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From: Bluffton, SC
Well I got 16.2 crusing at 77mph (annonying exhaust note at 70-75)......not too shabby for 35s and aftermarket wheels
Way back I cruised at 60-68 (different HWY) and got closer to 17
Way back I cruised at 60-68 (different HWY) and got closer to 17
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From: Concord, NC
I'm going to respectfully disagree with you slightly here glc. I think it is possible to get better mileage (if that is your goal) with the cruise control off. The CC WILL maintain a relatively steady speed, and that is actually a weakness in my opinion. Going downhill, it will try to keep the Torque Converter in a locked state to allow engine braking to hold the set speed. Then, as you go up hill, more gas is applied, the TC unlocks and maybe the transmission shifts down to hold that same speed.
Now, drive the same downhill/uphill combination, but this time maintain a constant throttle position with the CC off. The truck will speed up going downhill and then will use that excess speed going up the next incline, possibly "coasting down" before the top of the next rise and maybe finally unlocking the TC or downshifting if the speed drops enough.
Now, I'm not saying to actually drive like that, because the speed variation would be maddening. But, I suspect you can gain some advantage, especially in hilly terrain by leaving the CC off and taking advantage of downhill speedups.
But you're dead on with the other suggestions. 87 octane tune, speed limit or lower! (And I use the CC whenever I drive on the highway, unless the traffic makes it impractical.)
- Jack
Now, drive the same downhill/uphill combination, but this time maintain a constant throttle position with the CC off. The truck will speed up going downhill and then will use that excess speed going up the next incline, possibly "coasting down" before the top of the next rise and maybe finally unlocking the TC or downshifting if the speed drops enough.
Now, I'm not saying to actually drive like that, because the speed variation would be maddening. But, I suspect you can gain some advantage, especially in hilly terrain by leaving the CC off and taking advantage of downhill speedups.
But you're dead on with the other suggestions. 87 octane tune, speed limit or lower! (And I use the CC whenever I drive on the highway, unless the traffic makes it impractical.
)- Jack
....I do what I can
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I don't see any humor in it. There are a few words and their mutations that are not allowed on this site. When we see them, they are deleted. If a person is warned and continues using them, he gets a vacation.
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Jim
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No problem. We just try to run a little cleaner site than some and Ford has recognized us for it. Thanks for understanding.
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