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Old 01-22-2018, 12:33 AM   #11
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2wd vrs 4wd

That isnít normal. Our 2004 V10 4wd SMB high roof got a worst 12.7/best 13.8 running 65mph with a full load of water and about 300lb of stuff. That was with stock tires and 3.73ís. It will drop some with the new tires Iím sure. I have no headers.
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Old 01-22-2018, 03:56 PM   #12
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Just got back from a 700 mile trip towing a tent trailer. My mpg didn't change from not towing. I get 10mpg pretty much all the time, regardless of how I drive.

My van specs - 2005 passenger van (RB), V10, torqueshift transmission, Agile Offroad 4x4, 4.10 gears, 285/75/16 tires.
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Old 01-22-2018, 05:56 PM   #13
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'02 V10 E350 10 mpg up a hill or down a hill...tail wind or head wind...stock exhaust...4.10
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Old 01-22-2018, 10:34 PM   #14
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Well this trip i pulled a full U haul anf van. It was lighter than last trip. I got 8.5 to 9.2 and matched odometer to wifes new car.
I will change plugs. Real pain but doable
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Old 03-31-2018, 07:30 AM   #15
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Getting 14-15 mpg on my 99 7.3 4x4 with mud tires and a 6" lift. Texas is huge so we average about 75 mph crossing it headed to Colorado. Mileage goes up if i can stay around 60 mph, but you also don't get anywhere too quickly then.
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Old 03-31-2018, 08:42 AM   #16
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Getting 14-15 mpg on my 99 7.3 4x4 with mud tires and a 6" lift. Texas is huge so we average about 75 mph crossing it headed to Colorado. Mileage goes up if i can stay around 60 mph, but you also don't get anywhere too quickly then.
The thread is about V10 mileage.

Langan, I have a 25' motorhome with the v10 that always gets 11 mpg and only goes down to 10 when I tow a car. I agree that something isn't right with your rig.
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Old 03-31-2018, 08:51 AM   #17
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The thread is about V10 mileage.



Langan, I have a 25' motorhome with the v10 that always gets 11 mpg and only goes down to 10 when I tow a car. I agree that something isn't right with your rig.


My mistake, title suggests it's about 2x4 and 4x4 mileage.
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Old 03-31-2018, 08:54 AM   #18
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The exhaust should be helping. Not sure what the gas v10 motor exhaust looks like, but a motor is essentially an air pump, and if there are outlet restrictions, it will hurt power production and overall efficiency, so mileage will be affected.
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Old 03-31-2018, 08:58 AM   #19
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Getting 14-15 mpg on my 99 7.3 4x4 with mud tires and a 6" lift. Texas is huge so we average about 75 mph crossing it headed to Colorado. Mileage goes up if i can stay around 60 mph, but you also don't get anywhere too quickly then.
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My mistake, title suggests it's about 2x4 and 4x4 mileage.
You're right, I didn't mean to sound harsh. Just trying to keep it pure since he's trying to figure out why one V10 gets so much worse mileage than another.

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Old 03-31-2018, 10:35 AM   #20
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It is a little better if i do not use cruize control. I did change plugs and added 33's. It may just be its such a brick.
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