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Old 03-17-2012, 05:23 AM   #1
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fuel usage

I have a 1998 HR Imperial 40' DP with the 8.3. My question is does anyone have a like unit if so what kind of mileage are you getting. Getting ready for a trip and haven't had a chance to check it.
1998 Holiday Rambler Imperial
2004 Jeep Cherokee
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Old 03-17-2012, 08:18 AM   #2
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From what I've read you should get 8MPG plus or minus 2MPG. Enjoy the trip and in 100 years nobody will care what MPG you got. Let us know when you get back how you did. There are as you know many factors that influence mileage. Just be glad you have the means to fill your tank. deSanford
Sanford, Linda & R cats: Molly, Levi, Cody
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Old 03-17-2012, 11:44 AM   #3
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I have an '04 Imperial with the Cummins ISL. I drive from California to Connecticut on an annual basis, a 3200 mile one way trip. I also tow a '99 Jeep Grand Cherokee. Speed and wind resistance play a big role in the mileage you will get. When diesel prices started to go up, I tried slowing down. I now use cruise control set at 55 and the mileage picked up to the 9mpg range. Interestingly, I get better mileage heading east than west. Running west, I usually face headwinds which greatly affect the mileage. The best I ever got was 10.3 heading east and westbound was usually about 1mpg lower. Typically, I can count on the high 8s heading east and low 8s westbound.

Picking up the speed to 65 will usually subtract 1mpg from those numbers. The mileage numbers are obtained from my Aladdin system, but I have verified them over many tankfulls and have confidence in the numbers.

Dick Lucas, '04 HR Imperial.
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Old 03-17-2012, 05:46 PM   #4
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I have a ISC 350 8.3 and at 60 mph we get 9 + with no head wind and at 65 about 8.2 to .4 Towing a 2010 Chevy equinox.
Walt & Will
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Old 03-17-2012, 06:00 PM   #5
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I have a 03 HR imperial with 400 isl usually get between 8-10 mpg towing a jeep liberty try to start out slow it really helps save fuel,
2012 210 roadtrek simplicity
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Old 03-17-2012, 06:13 PM   #6
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Thanks a lot guys, guesss I will cut the Sept. trip shore. Up into Arkansas and back into San Antonio. Guess most of my trips will be in Texas, a lot of them to the coast.
1998 Holiday Rambler Imperial
2004 Jeep Cherokee
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