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Old 06-13-2014, 08:57 AM   #21
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I realize GM says you get more HP out of flex fuel it must be true if they do. For whatever reason it sure doesn't feel like it when you actually drive it on the E85 or at least my work truck doesn't. Maybe its tuned for regular unleaded?

The mess I mentioned above is because you'll probably need 2 types of gasoline in you coach unless your certain the generator will run off of E85. The gas with only 10% ethanol seems to give these small engines fits, what will the E85 do?

I assume the E85 burns cleaner, since it produces less mpg there has to be some point in using it.

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GM also says you get way more horsepower out of their V8 than you do the V10. Chevy used to spec 300HP, Ford was 305. A couple of years ago Chevy went to 327...I asked if it was a new engine and they said no. All they did was run the engine RPM's up higher.

You can also look at the sticker on the door to see fuel economy and realize you'll never get that. You just can't believe everything you read.
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Old 06-13-2014, 12:25 PM   #22
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So you're saying GM might not always be telling us the truth? Doesn't sound the GM we all all know and love. He he

May just be me but for many reasons I think when you even consider buying an RV you just throw mpg considerations out the window. If you can somehow manage to squeeze 10 mpg out of one then you should thank the lucky tail winds.

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Old 06-13-2014, 12:37 PM   #23
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Agree. And if you look at MOST service manuals, you can go XXX number of miles between oil changes but there is an asterisk and if you use E85 that mileage is reduced. I've talked to a few mechanics that say E85 will break down an engine faster than regular gas if used frequently. More contaminants (not emissions).

Not sure why you would specifically request E85 unless you grow corn or work for an ethanol plant.

If it's en environmental issue...think about all the processing that goes into producing Ethanol. I live in Indiana...we know. All the corn, the fertilizer, the plants, governments subsidies.
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Old 06-13-2014, 09:16 PM   #24
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Corn is for feeding people via beef, pigs and cows.
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Old 06-14-2014, 11:10 AM   #25
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Isn't ethanol just a way to keep American money in America? Despite what we think about it as a fuel that is a pretty good argument in favor of using it. I don't think it solves the real problem though.

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Old 06-17-2014, 12:22 AM   #26
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We have a 2013 Chevy 4500 on a 2860 MH. We have been averaging 9.7 MPG. We have no problems on hills. We pasted a Tundra pulling a 5th wheel with no problems. And you could hear the Tundra screaming for help.

The Chevy with a smaller MH would be just great for MPH and power.
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Old 06-17-2014, 06:56 PM   #27
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We have a 2013 2450S that gets 12-13 without pulling a car and 10 plus pulling it. I cannot see where the Ford V10 would do anything for me but worse mileage. That is the 6.0 MAX.. No issues with hills at all.
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Old 06-26-2014, 10:24 PM   #28
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There is not replacement for displacement.
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Old 06-27-2014, 07:33 AM   #29
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There is not replacement for displacement.

Chevy 6.0 V8 has 364 cubic inches
Ford 6.8 V 10 has 362 cubic inches

Displacement is measured in cubic inches. Chevy has more.

Yes the Ford has more torque but not displacement!!


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Old 06-27-2014, 07:46 AM   #30
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Since we are somewhat off topic now. When they switched over to 10% ethanol my X with the V-10 barely had enough power when towing my trailer to hold 55 into a small headwind, the mileage also dropped to 5 from 7.5. I started running 93 octane and my power and mileage were almost back to normal. Nothing wrong with my X and it now runs even better with a tuner on 89 octane.

We have a newer 5.4 dump truck at work and empty it will barely get out of it's own way! Can't imagine it with E85 in the tank.

Do yourself a favor and get the V-10. In the end it will get the same mileage as the V-8 using the same fuel!
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