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Old 03-11-2017, 06:51 AM   #1
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Gas mileage

I realize the multiple variables involved with gas mileage but would like some help estimating my potential use. I am considering an 8 foot slide in light weight camper. I have a 2011 Chevy 3/4 ton with a 6 liter gas engine. What sort of highway mileage will I get when I'm NOT in the mountains? Thanks for any help.
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Old 03-12-2017, 01:41 PM   #2
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I saw this yesterday and thought perhaps someone else with more pertinent information would post. We had gasoline powered camper haulers back in the late '70s to early '80s before going to diesel. These were carbureted engines and I would guess that yours is injected, so your engine would probably be more fuel efficient. There are also emission controls that would affect mileage so unless you get a post from someone with the same setup as yours it will be an educated guess.

Our mileage with gasoline engine trucks and 11.5' campers was about 8-10 mpg. With diesel it went to 15-16. Towing with diesel was about 2 mpg less. The diesel mileage was an average over many years, while gasoline was one cross country trip and fairly local use for a few years. Our current 26' TBI 454 powered '94 Flair gets 7-8 mpg.

I hope this helps some.

Steve
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Old 04-04-2017, 05:55 PM   #3
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Just returned from 2500 mile round trip to Florida. 1 ton Chevy dually gas engine, crew cab, Arctic Fox 990. 7.5 mpg average. Average speed 70 mph. I don't have enough vacation time to go slow!
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Old 04-05-2017, 09:21 AM   #4
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Our freeway cruising speed is around 70 mph also.

We took one trip of about 7k miles each with both the Flair and gas powered TC. Diesel mileage is based on 300k+ miles.

Steve
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Old 04-05-2017, 09:29 AM   #5
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We used to have a F150 with 5.0 that would get around 15% less millage when we loaded up the 8 foot camper.
Hope that helps.
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Old 04-08-2017, 04:26 PM   #6
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I'd guess around 9 or so. My work truck is a 2015 Chevy with the 6.0 and 4.10 gears. It has a tool bed on it and ladder racks, loaded up it sits at about 9,000 pounds. We will often have another 1,000 or so pounds of materials in the bed so I think the weight would be similar to what you'll have. I average about 11.5 MPG with the truck in this configuration for about 31,000 miles so far. Sometimes it will dip down around 10.5.
You'll have more wind resistance with the TC which is probably a bigger factor on MPG than weight.
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