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Fuel consumption high, 2024 Lunar

Stock PW
MPG gets a little better after some time.

At approx 31.5k mi I have averaged 12.4 mpg with frequent light towing (under 2k lbs)
Mostly a daily driver with 1/2 surface streets and 1/2 freeway, winter with daily warmup to 90+ deg F coolant temp avg 11.5 mpg. Summer with very short warmup avg 12.8.
For the first 5k mi avg 11. For the next 5k avg 12.4.
i take multiple 300mi round trips up canyons though the rocky mountains each year and avg 16.6 mpg but only after truck was over the 10k mark on the odo. Prior to that the trip was around 14.5 mpg.
 
I always average 9-10 in the city. I live on the outskirts of Los Angeles and traffic is always horrible. I do notice that my MPG improves going over 80 mph. It always stays around 15 to 20 mpg. I just don't drive it long enough distances to make the difference. That is with 37's. I have just accepted that it will always average around 9 mpg.
 
I have a 6.4 2500 (not a pw) and my mileage dropped around town as soon as the winter blend gas showed up. Also the vent shutter in front of the radiator is closed due to the cold temps. I do theorize it might be slowing and restricting the direct ram air flow into the airbox. Summer blend mileage was much better and that shutter is open.


For the original poster, between all those, a not broken in engine and a 4.10 rear its not surprising to see that mileage. Ide also make sure your tire pressure isnt low. I run mine 2-3 psi over recommended cold pressure. Under pressured tires will make that baby extra thirsty.
 
Riz! said:
I have a 6.4 2500 (not a pw) and my mileage dropped around town as soon as the winter blend gas showed up. Also the vent shutter in front of the radiator is closed due to the cold temps. I do theorize it might be slowing and restricting the direct ram air flow into the airbox. Summer blend mileage was much better and that shutter is open.


For the original poster, between all those, a not broken in engine and a 4.10 rear its not surprising to see that mileage. Ide also make sure your tire pressure isnt low. I run mine 2-3 psi over recommended cold pressure. Under pressured tires will make that baby extra thirsty.
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The air intake is above and in front of the shutters.
 
I feel you, getting used to the shock myself! Coming from a Ram 1500 with the 5.7 and 35” Goodyear Ulra Terrains, best mpg’s were 14.5 (17.5 stock at best). My Power Wagon is all stock with about 600 miles, one full tank from dealership and into my 2nd fill up with Costco 85 and 91 octane (Colorado). 1st fill up was 10.1 mpg (hand calculated) and little more then a quarter tank used thus far computer shows 12 mpg’s but this tank has been mostly highway. Definitely knew it was thirsty before I bought it, but hope to get 14-16 mpg’s on road trips after it’s broken in. Overall no regrets and I love the Power Wagon! Night and day difference coming from the 1/2 ton.
 
PW53 said:
I feel you, getting used to the shock myself! Coming from a Ram 1500 with the 5.7 and 35” Goodyear Ulra Terrains, best mpg’s were 14.5 (17.5 stock at best). My Power Wagon is all stock with about 600 miles, one full tank from dealership and into my 2nd fill up with Costco 85 and 91 octane (Colorado). 1st fill up was 10.1 mpg (hand calculated) and little more then a quarter tank used thus far computer shows 12 mpg’s but this tank has been mostly highway. Definitely knew it was thirsty before I bought it, but hope to get 14-16 mpg’s on road trips after it’s broken in. Overall no regrets and I love the Power Wagon! Night and day difference coming from the 1/2 ton.
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I also came from a 1500 with the 5.7. It was a night edition, good light truck road tires a 3.93 rear, and i always run high octane in my vehicles. I was getting low 20’s on long highway trips and high teens for the rest of my driving.

Also if you open the air box there is a charcoal filter sonically welded into the lid of the air box. I removed them from both of my trucks. I read they are for absorbing gas fumes that evaporate backward out of the airbox when the truck is not running. I held the stock filter flt on my hand and blew on it. I could feel the airflow. I held the charcoal filter the same way and blew on it. I could not feel the airflow. It has to restrict flow into the engine. Charcoal filters lose thier ability to absorb chemicals after a few weeks anyway. Think about fishtanks filters. They recommend changing them once a month. I cant say for sure if it made a difference in mileage because I didnt do a specific before and after calculation. I do feel that there was improved throttle response.

If you want to remove it, cut a slice in the filter and then pry the frame away from the airbox lid. The little sonic spot welds break easily
 
I averaged about 11-12 mpg combined on my PW so you are about right for city driving. It sucks the gas no doubt about it. I loved the truck and it was awesome off road but it sucked driving it daily and constantly stopping at every gas station along the way. (I went back to a diesel.) The PW should have come with a much larger fuel tank, that would have made it more tolerable.

.
 
Riz! said:
I also came from a 1500 with the 5.7. It was a night edition, good light truck road tires a 3.93 rear, and i always run high octane in my vehicles. I was getting low 20’s on long highway trips and high teens for the rest of my driving.

Also if you open the air box there is a charcoal filter sonically welded into the lid of the air box. I removed them from both of my trucks. I read they are for absorbing gas fumes that evaporate backward out of the airbox when the truck is not running. I held the stock filter flt on my hand and blew on it. I could feel the airflow. I held the charcoal filter the same way and blew on it. I could not feel the airflow. It has to restrict flow into the engine. Charcoal filters lose thier ability to absorb chemicals after a few weeks anyway. Think about fishtanks filters. They recommend changing them once a month. I cant say for sure if it made a difference in mileage because I didnt do a specific before and after calculation. I do feel that there was improved throttle response.

If you want to remove it, cut a slice in the filter and then pry the frame away from the airbox lid. The little sonic spot welds break easily
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That’s something I had not heard before, the charcoal filter . Thanks for the heads up, I’ll check it out. And that was damn good mpg’s with your 5.7. I loved my built to serve edition but just wanted to move to an HD truck with capabilities.
 
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PW53 said:
That’s something I had not heard before, the charcoal filter . Thanks for the heads up, I’ll check it out. And that was damn good mpg’s with your 5.7. I loved my built to serve addition but just wanted to move to an HD truck with capabilities.
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Me too. Wanted a 6’4” bed with the crew cab.
 
Yesterday I put more than 300 miles on my Ram from a fresh fill up and the lie o meter says 18.5 MPG.

It was all easy freeway and a bit of back roads.

I ran most of the freeway in cruise control at the speed limit of seventy or less.

I will fill it up later this week to get the hand calculation of the MPG likely about .7 MPG less or so.

Had just less than 400 pounds in the bed on the return trip. My tires are at about 45 psi, so if at the recommended 60/65 psi it may have gotten better MPG.
 
dieselscout80 said:
Yesterday I put more than 300 miles on my Ram from a fresh fill up and the lie o meter says 18.5 MPG.

It was all easy freeway and a bit of back roads.

I ran most of the freeway in cruise control at the speed limit of seventy or less.

I will fill it up later this week to get the hand calculation of the MPG likely about .7 MPG less or so.

Had just less than 400 pounds in the bed on the return trip. My tires are at about 45 psi, so if at the recommended 60/65 psi it may have gotten better MPG.
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Wow, that’s awesome. Let us know when you hand calculate. I don’t know what kind of tires your running and your Bighorn should do better then our PW, but that’s impressive.
 
PW53 said:
Wow, that’s awesome. Let us know when you hand calculate. I don’t know what kind of tires your running and your Bighorn should do better then our PW, but that’s impressive.
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I have General Grabber HDs a highway tread tire the selling dealer installed and I’m going to wear them out. We’ve got over 20k on them and they look like they have another 30k to go.
 
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dieselscout80 said:
Yesterday I put more than 300 miles on my Ram from a fresh fill up and the lie o meter says 18.5 MPG.

It was all easy freeway and a bit of back roads.

I ran most of the freeway in cruise control at the speed limit of seventy or less.

I will fill it up later this week to get the hand calculation of the MPG likely about .7 MPG less or so.

Had just less than 400 pounds in the bed on the return trip. My tires are at about 45 psi, so if at the recommended 60/65 psi it may have gotten better MPG.
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Over 356.8 miles I used 20 gallons of gas, so 17.8 Mpg hand figured vs the 18.1 the display showed.
 
Best I've ever gotten was 13.2. I am always between 11-12 mpg per tank. I've had stock tires, 35's, 37's, all adjusted via ProCal Snap, always get the same mileage. My 37's are very new, maybe if I did a long road trip it would get better, but I've never gotten the 14-15 and up claims.
 
Texas RAMPW said:
Best I've ever gotten was 13.2. I am always between 11-12 mpg per tank. I've had stock tires, 35's, 37's, all adjusted via ProCal Snap, always get the same mileage. My 37's are very new, maybe if I did a long road trip it would get better, but I've never gotten the 14-15 and up claims.
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After I ware out the stock tires and move up to 35”, maybe 37”, I would take the 12 mpg’s. Any higher mileage would be welcomed
 
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