18.5 mpg on 6.4l

[dmillar74]

My engine is getting more efficient as the miles add up. This was a 4 hour trip from Gatlinburg to Cincinnati up 75 and through the mountains. My truck has about 14,000 miles on it now. It is a 2016 2500 Long Bed Crew 4x4 w/ 3.73 and the 6.4l.


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[RainDesert]

Does your trip A distance directly correlate to the fuel gauge? 281 miles and only 1/2 tank used!?

 

[dmillar74]

Yes. It's sounds strange to me too. I filled up in Tennessee, reset my trip gauge and off I went.


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[Andrew09HEMI]

Man if that's on point then I'm impressed. I can squeeze 16.8 out of mine headed to Asheville from Charlotte

 

[dmillar74]

Honestly I've never seen it this good. Good quality gas (87) and engine wearing in? I was shocked especially because I was running through the mountains.


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[dmillar74]

I'm in Ohio in a bit to go back to Michigan. I'm leaving shortly for another 4 hours. Gonna reset again and see what it turns on flat land.


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[SouthTexan]

I'm in Ohio in a bit to go back to Michigan. I'm leaving shortly for another 4 hours. Gonna reset again and see what it turns on flat land.


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Try to fill up before hand and after so you can record your mileage to compare hand calculations to the computer.

 

[Andrew09HEMI]

Even if your computer is off by some it's still impressive for going through the mountains. I run 93 as I'm tuned for it but I'm curious what you'll get on flat land hand calculated

 

[tpk0999]

This truck is getting alot better gas mileadge than I originally would account for. Winter/City driving I was going to expect 8-9 mpg. I got around 12 mpg. I think with summer driving I'll be seeing much better numbers. My truck putting along at 40-45 mph will acheive 28mpg, what kills it is those damn stop signs and red lights

 

[RainDesert]

Regardless of what the computer mpg says, you still went 281 miles on 1/2 tank. That's just awesome.

 

[2robinhood]

Regardless of what the computer mpg says, you still went 281 miles on 1/2 tank. That's just awesome.

Yeah, my tank is about empty at that range.

 

[dmillar74]

Ok. Most of my trip through Ohio was showing an average of over 20mpg. I gassed up at a Marathon station with 87 octane. Reset the trip. This was to my location in Michigan. Air conditioning on the whole time.

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[RainDesert]

Great report. What size tires are on your truck? I assume you are totally stock height.

 

[RoadDog66]

Just took a 250 mile trip from MD to PA. Burnt 16.3 gals of fuel and only saw 15.5 mpg running 72-75mph. Your truck must be blessed or possessed to get those kind of #'s regularly. Congrats on that bro

 

[dmillar74]

Great report. What size tires are on your truck? I assume you are totally stock height.

Yep. Totally stock.


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[dmillar74]

Just took a 250 mile trip from MD to PA. Burnt 16.3 gals of fuel and only saw 15.5 mpg running 72-75mph. Your truck must be blessed or possessed to get those kind of #'s regularly. Congrats on that bro

I have never seen numbers like this to be honest. I think it's a combination of warm weather, engine starting to break in, and I tried to make sure I never went over 72 miles an hour . Most of the time I was between 65 and 70 miles an hour. At the 200 mile mark on my trip, when I was still on the freeway, I was at 20 miles to the gallon. It was only when I got off at my exit in Michigan and got to my parents house that it dropped to 19.5 miles per gallon.

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[RainDesert]

Do you mind posting your tire size? TIA

 

[sandawilliams]

The evic means little. I hand calculate and always end up about 2 MPG less. I've seen numbers close to yours but then the real world figures disappoint. I've had 5 Chrysler products now with the evic. Non of them were reliable. If yours is you are the exception rather than the rule.

 

[dmillar74]

Do you mind posting your tire size? TIA

Will do. I'll post it up a little later.


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[Skrap]

Either way you slice it, those are good numbers. Take off 1.5-2.0 mpg for a hand call and still great for a larger gasser. I think the key is his speed. I don't drive 65-70 on the interstate. Going to up I-15 for 900 miles from SoCal to Montana I drive about 78-81 mph and as getting 16-17mpg. I got over the pass north of Salmon, Idaho and dropped into the Bitterroot Valley doing 55-65 for the next hour and my mpg' jumped into the 18s. IMO, with fuel mileage, speed kills.