Apparently 63MPH is the Sweet Spot for 24MPG!!!!!

[Curt Gobbell]

So cruising into work this am, I decided to see how good my MPG could be. 24 MPG!!!!!!

Truck Background:
- 2014 1500
- 5.7L
- 4x4 with 8HP70 trans and 3.21 rear end
- 163k miles
- 87 octane gas with a 87 octane tune via flashpaq
- tires are 35s, and the truck computer has been reprogrammed via flashpaq


Trip background:
- 22 miles
- 99% interstate with no stoppage this am
- cruised at 63MPH fairly constantly

 

[Dr. Righteous]

I've found my '14 Hemi RAM will get 22-24MPG high way on a trip but I drive it easy. Most of the time when someone complains about poor mileage; all things being equal it's usually poor driving habits. It surprised me when I say that to a lot of people they think I'm talking about reckless driving. Like doing burn outs and driving 90 mph.

 

[crazykid1994]

I used to get 19-20 in my truck doing 65-70mph when I was stock on the highway. 2017 8 spd 5.7 hemi quad cab 4wd. Lifted on 35s the same drive dropped to 16. Tuned for headers and 6.4 manifold and I get around 16 or 17 still. But stop and go is horrendous which is most of my driving. Puts me around 12 avg. if I can get going around 55 consistently my current mpg says around 20-21

 

[Rlaf75]

There's a lot of variables that effect gas mileage

 

[chri5k]

It ain't called the lie-o-meter for nothing. Many folks note a 1 - 4 MPG difference between the lie-o-meter and hand calculation. Try hand calculating to see where MPG really falls.

 

[Jeepwalker]

Are those your commuting miles? If so, drive a whole tankful during the week, tryinig to stay at 63 and fill back up at the same pump next time and see what you get!!

I usually figure out my mileage based on about 4-5 tankfuls, averaged out. That's my real fuel economy. But like you say, it's good to know where the sweet-spot is. Thanks for the info...