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Old 03-26-2012, 08:53 AM   #43
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Quote:
Originally Posted by ga traveler
I have a 1998 Pace Arrow 35 ft. with a V10. On a trip out west in 2007, I averaged 7.84 mpg. After some modifications I averaged 8.33 on the same trip in 2008. I averaged 8.33 in 2009.
I think we all would like to know what mods you did, if you don't mind sharing.
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Old 03-27-2012, 09:14 AM   #44
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I think we all would like to know what mods you did, if you don't mind sharing.
I don't mind sharing at all. I feel good about these MPG's because they were on three trips that were all over the same basic route and the mileage was averaged on more than six thousand miles.
First was the infamous restrictive air intake. I replaced the Ford crap with a Banks Air intake system. You CAN buy the just the air intake system alone. I then replaced the muffler with a flow through stainless steel muffler. When I took it out for a trial run, I thought the police would come after me. It screamed with a shrill noise. I installed a second flow through stainless steel muffler. now it is as quiet as it was from the factory. (Flow through mufflers have no baffles and so, reduce back pressure.)
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Old 03-27-2012, 09:20 AM   #45
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I just looked at my post in your question and noticed I was slightly off in my post. It should be 8.33 in 2008 and 8.32 in 2009.
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Old 03-27-2012, 09:29 AM   #46
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Quote:
Originally Posted by ga traveler
I just looked at my post in your question and noticed I was slightly off in my post. It should be 8.33 in 2008 and 8.32 in 2009.
Thank you.
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Old 03-27-2012, 08:22 PM   #47
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The next fun discussion is how MPG changes depending on if your state requires 10% Ethanol. Ours does, neighboring states do not. I would not be surprised to see some folks getting 1 MPG better in states that don't have the 10% ethanol requirement. The feds recently approved 15% ethanol for newer vehicles that are not 'flex fuel' which has some concerned. ODA Measurement Standards Division Biofuel renewable fuel standard EPA Allows 15 Percent Ethanol Blend, Igniting Air Pollution Battle
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Old 03-27-2012, 08:32 PM   #48
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If I don't go to far too often, I can average about $150.00 per month. LOL
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Old 03-28-2012, 09:48 AM   #49
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Smile

It is great to read 'honest' real life experience remarks that are not
exaggerated. I met another owner, that traded off his RV for a new
one with V10, that salesman said would average 10MPG..after buying,
he found it was just like old one..6-7. My car, equipped with 'mileage
and gallons computer', always takes more fuel than what it says has
been used, thus MPG, by computer is higher than diving actual mileage
by gallons to fill. To see what the computer says, 'makes you feel good'.
To believe it, 'makes me a fool'...I tow the car..if I would take gallons off
that would have been used to drive the car same distant as RV, from
what it takes to fill RV and then figure RV MPG..This would also 'make
me feel good'. Example:-1000 mile 'trip' towing 25MPG auto. Fill up of
RV took 143 gallons (7MPG)..Car didn't use 40 gallons, (1000/25MPG)
143-40=103 gallons, 1000/103 about 10MPG..(so, maybe the salesman
was partly right, as long as you had a 'tail wind', no load, no tow.)
'Have a Great Day in the Lord', gene
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Old 03-30-2012, 10:27 AM   #50
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About 6 years ago, I had a 33 ft Damon Daybreak, Class A with the V10 and Ford Chassis. I got a solid 10 mpg going up hill or down and fast or slow, didn't seem to matter. I just bought a 1999 Lazy Daze, Class C which is lighter with better wind resistance and the same V10 on a Ford Chassis and I saw 9 mpg on a 200 mile trip I just took. I want my Damon back. Note, I am not pulling anything and I do drive fast.
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Old 04-02-2012, 10:24 AM   #51
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The effect of ethanol is highly under-rated IMHO. The greenies and Goobermint like to downplay it, but it's a significant thing when it comes to mileage.

Between the lower energy content of ethanol versus gasoline (76k BTU for ethanol versus 116k BTU for gasoline, or 35% less by volume) and the very great affinity for alcohol to absorb and retain water, compounded by the foregoing causing EFI systems to over-compensate for lower energy inputs (higher flow rates to injectors, retarding timing, etc.) the end result is often dramatically lower MPG numbers.

If you add all the above together, it's not unrealistic to see a 20% drop in fuel mileage because of the ethanol.

In my own case, merely running premium fuel will boost my 'real world' mileage by almost 2 MPG every time. The combination of no ethanol and higher octane it makes a big difference.
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Old 04-03-2012, 12:16 AM   #52
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The effect of ethanol is highly under-rated IMHO. The greenies and Goobermint like to downplay it, but it's a significant thing when it comes to mileage.

Between the lower energy content of ethanol versus gasoline (76k BTU for ethanol versus 116k BTU for gasoline, or 35% less by volume) and the very great affinity for alcohol to absorb and retain water, compounded by the foregoing causing EFI systems to over-compensate for lower energy inputs (higher flow rates to injectors, retarding timing, etc.) the end result is often dramatically lower MPG numbers.

If you add all the above together, it's not unrealistic to see a 20% drop in fuel mileage because of the ethanol.

In my own case, merely running premium fuel will boost my 'real world' mileage by almost 2 MPG every time. The combination of no ethanol and higher octane it makes a big difference.

Not to mention ethanol eats away seals and hoses. The older vehicles weren't setup to run ethanol and now all gas has at least 10% ethanol so it destroys your vehicle and turns to varnish if you don't add Stabil.
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Old 04-03-2012, 05:44 AM   #53
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Does not premium fuel contain ethanol add well as regular?
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Old 04-03-2012, 05:59 AM   #54
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2009 Astoria with the 340 Cummins ISB. I bought it with this time last year with 4600 miles on it. first trip was to yellowstone country via michigan from texas, average MPG for that trip started out a about 7.2. I now have 17000 miles on the MH and my MPG now averages 8.4 overall. If i keep the RPM at about 1800 and speed at or below 60 I can get in the high nines on the interstate, realisticaly I figure 8 MPG for trip planning.
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Old 04-03-2012, 06:28 AM   #55
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Quote:
Originally Posted by JimmyLeggett
2009 Astoria with the 340 Cummins ISB. I bought it with this time last year with 4600 miles on it. first trip was to yellowstone country via michigan from texas, average MPG for that trip started out a about 7.2. I now have 17000 miles on the MH and my MPG now averages 8.4 overall. If i keep the RPM at about 1800 and speed at or below 60 I can get in the high nines on the interstate, realisticaly I figure 8 MPG for trip planning.
Thanks for sharing but this thread is for gas engines only.
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Old 04-03-2012, 12:12 PM   #56
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Does not premium fuel contain ethanol add well as regular?
It varies by brand and State, but for the most part, no, premium does not contain ethanol.

The reg's usually say something along the line of "fuel must contain no less than X % ethanol by total volume sold'.

Usually that 'minimum' is 5% or 8%, but since the 'regular' gasoline is usually an E10 blend, the company's can still meet the requirement because they sell so little premium that in the grander scheme of things they are still above the minimum when you take it all together and then average it out.

If you're curious most gas company's websites will tell you if their gas is an Ethanol blend or not.
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