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I'd have to call it more reliable than an internet forum! You are not seeing 12% gains in mpg going from 87 to 89. If that were the case the greenie weenies would be clamoring daily for the government to mandate its use regardless of choice. Think of the forced regulations that are in place now not doing squat (eco mode). Just come back to reality.
IF you are towing heavy, 3.92 is a little better, but unloaded 3.21 a little better. Even with the 3.92, with a soft foot and speed control over EGO, I can get a consistent 22+ on a long trip, and up to 25.
Wow, that's impressive for any truck. I've found a 19 that checks most of the boxes of wants but it has 3.92. 4x4 if I thought I could get 20 on hwy consistently I would do buy it tomorrow.
20 mpg highway is easy with 3.92's as long as you go slower than 75 mph.
Yea, that's my main issue.....
Just 2wd for me though.
Top speed here is 70 in WA, and 60/65 for trucks. I am on a lot of secondaries, so 55/60 a lot of the time. Try to stay off the interstates it I can and am not in a hurry
I doubt it will get better...but I have similar driving as you and get 13.x-14.x depending on how much interstate driving gets mixed in.
This is my observation as well.
I use the cruise control 95% of the time on the freeway. The only time I click it off is for hills. I can keep it in 8th gear most of the time, where the cruise control will shift down to 7th.
Used cruise for this truck 3 separate times now and I think I saw the Eco light come on one time for a few seconds. I do much better, like 3-4 mpg average better, not using it. I have 3.92's so it might be a little different for 3.21's, but this is just something I noticed with bigger engines/heavier vehicles in general. Gotta use their own inertia more.
If you're trying to use the CC on hilly terrain, that makes sense. My commute to the airport is relatively flat and the CC works very well. The ECO light comes on quite a bit on the 60 mph sections and only occasionally on the 70 mph stretch. It's very unlikely that I would see a difference in mileage using vs not using it.
Best is when you're on CC coming down a slight grade and the guy behind you wants to kiss your trunk/tailgate, then you hit a big up-grade and suddenly there's a tractor trailer sized gap haha.If you're trying to use the CC on hilly terrain, that makes sense. My commute to the airport is relatively flat and the CC works very well. The ECO light comes on quite a bit on the 60 mph sections and only occasionally on the 70 mph stretch. It's very unlikely that I would see a difference in mileage using vs not using it.
I can easily tell who is and isn't using CC on the freeway. There's always one guy that you are playing cat and mouse with as you pass and get repassed multiple times because he can't hold a steady speed within 10 mph.
40k here
I was literally just thinking about this yesterday. I don't usually subscribe to the mantra that ignorance is bliss, but in this case...Can we go back to when the cars didn’t tell us our mpg?
Can we go back to when the cars didn’t tell us our mpg?
