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Old 10-23-2013, 06:47 PM   #1
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42DL Fuel Milage

We purchased a 2006 TS 42DL w a 400 Cummins. last spring. Wondering what kind of MPG we should expect. With New air and fuel filters @ 65 mph and an F150 behind it `6.2 to 6.5 is all she will get. Some TS owners have told me that is low. What do you think. Thanks

2006 TS 42DL
Texas
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Old 10-23-2013, 10:30 PM   #2
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That sounds about right for the 65 mph speed and the weight of your toad.

Our Mandalay is a 42-footer with the Cummins ISL 400 hp engine. We weigh about 34,000 pounds. We are averaging 7.8 not towing anything.
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Old 10-24-2013, 05:55 AM   #3
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As you can see we have the same coach, and track all fuel costs yearly. We get 6.5 overall. That does not include what the Aqua Hot or genny use's. So if you were to add 80 to 100 gals for there use it would put it somewhere in the 7 to 7.5 range. We travel 65 mph, and tow a Trailblazer. Your numbers seem correct to me, plus your toad is quite heavy. Hope you enjoy your TS as much as we do. Hope to meet up someday.
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Old 10-24-2013, 09:22 AM   #4
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Your best bet is to slow to 60...that will get the Allison in 6th gear and improve your mileage.
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Old 10-24-2013, 10:04 AM   #5
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Only drive on roads going downhill and having a tailwind will help.
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Old 10-26-2013, 05:33 PM   #6
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Just a data point: I drive at 60 MPH in "Economy Mode" and we typically get 7.2 to 7.7 (on mostly flat terrain) pulling a Honda CRV. If we face a head wind or significant "hills" the MPG drops into the mid 6s!

You might want to read this: http://cumminsengines.com/secrets-to...r-fuel-economy

The link mid page will open a PDF from Cummins.
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