MPG help - Diesel Truck Forum -
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post #1 of 2 (permalink) Old 05-03-2013, 12:44 PM Thread Starter
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MPG help

I run the H&S mini max high sulfer program and towing my 5th wheel taken it easy 65 mph on for the most part level road I get 8.50 MPG is this the norm or is my truck useing more fuel then normal.

08 F-350 crew cab Lariat 4X4 Dually auto 4:10 gears.
rideing on Hankook Dyna pro AT's
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post #2 of 2 (permalink) Old 05-09-2013, 01:32 AM
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If your 5th wheel is the one pictured in your Avatar, then I'd say that with the 4.10 gears you're only going to see around 9 MPG at 65 mph.

The key to getting good mileage on our 6.4 PowerStrokes is to keep the RPMs at or below 2,000 rpm when running down the road.

With your gears, this would mean that you'd probably have to cruise at around 60 mph and then, I'd say that your mileage would only be around 10 mpg.

That's one BIG trailer !!!!!!
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