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05-10-2006, 04:54 PM
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#1
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Senior Member
Join Date: Dec 2001
Location: Gainesville, VA
Posts: 314
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With all the talk about how 10% ethanol mixed gas brings down your mileage, could filling you tank first with plus or premium, then at 1/2 tank topping off with the ethanol blend, would that help to increase the miles per gallon over straight eth. blend?
Best Regards!
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Paul D
2007 Winnebago Journey 39K Freightliner Chassis, Cat C7
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05-10-2006, 04:54 PM
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#2
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Senior Member
Join Date: Dec 2001
Location: Gainesville, VA
Posts: 314
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With all the talk about how 10% ethanol mixed gas brings down your mileage, could filling you tank first with plus or premium, then at 1/2 tank topping off with the ethanol blend, would that help to increase the miles per gallon over straight eth. blend?
Best Regards!
__________________
Paul D
2007 Winnebago Journey 39K Freightliner Chassis, Cat C7
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05-10-2006, 05:38 PM
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#3
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Community Moderator
Winnebago Owners Club Freightliner Owners Club
Join Date: Dec 2003
Location: Weyauwega, WI US
Posts: 8,720
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Old Snipe;
By the time you pay the difference for the premium gas you may lose more $$ than what is lost by ethanol. I have been using 10% ethanol in my unit since last fall. I keep fuel records and I can't truthfully tell you that I lost or gained mpg. Wind and road conditions always factor in. I average about 6.5 when I tow my Buick and about 7.5 when I don't. It does not seem to make any noticeable difference.
Don
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Don & Bev Morgan Weyauwega WI, 05 Itasca Horizon 40KD, 400 HP Cummins, Adopted by a great couple, Toad 07 Saturn Vue AWD, Air Force One, TST 510 TPMS, Mayor of Weyauwega 2007 - 2013, Waupaca Co Board Supervisor 2010 - 2014
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05-10-2006, 05:41 PM
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#4
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Senior Member
Winnebago Owners Club Pond Piggies Club Appalachian Campers Mid Atlantic Campers
Join Date: Dec 2002
Location: Sarver, PA/Crystal River, FL/Shelocta, PA
Posts: 4,671
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Higher octane gas does not increase mileage.
__________________
Sarver, PA/Crystal River, FL/Shelocta, PA · FMCA 335149 · W3TLN 2005 Suncruiser 38R · W24, no chassis mods needed · 2013 Honda Accord EX-L · 2008 Honda Odyssey EX-L
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05-11-2006, 01:23 AM
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#5
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Tom N:
Higher octane gas does not increase mileage. </div></BLOCKQUOTE>I resemble that remark. 
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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05-11-2006, 04:13 AM
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#6
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Senior Member
Join Date: Apr 2006
Location: The Great Pacific Northwet
Posts: 382
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Ethanol contains less heat energy per gallon.
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Steady Eddie/1999 KSCA 3357/P12 Chassis/454 Vortec L-21
Allison transmisson
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05-11-2006, 05:42 AM
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#7
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Senior Member
Newmar Owners Club Workhorse Chassis Owner
Join Date: Feb 2005
Posts: 255
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May sound strange, since you pay more for it, higher octane does not mean that it is "better" fuel. The additive for octane rating is more a measure of burn time for the fuel. Higher octane equates to slower burn. The reason you get a knock with lower octane is the fuel detonates prematurely or too quickly. I am not familiar enough with the ethanol properties to know how it compares.
I have operated equipment with an electronic fuel control that would automatically adjust for the type of fuel used. You could basically burn anything that would go down a pipe and burn. Fuels that were proven acceptable; gasoline, diesel, JP4, JP8 (Jet Fuel). The ability to design flex-fuel engines has been around since the late 50's just not cost effective to produce.
__________________
Charlie and Lexanne
Loyal servants to Patches and Precious
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05-11-2006, 05:45 AM
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#8
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Senior Member
Join Date: Apr 2006
Location: The Great Pacific Northwet
Posts: 382
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Ethanol absorbs water.
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Steady Eddie/1999 KSCA 3357/P12 Chassis/454 Vortec L-21
Allison transmisson
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05-11-2006, 06:08 AM
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#9
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Senior Member
Workhorse Chassis Owner
Join Date: Sep 2004
Location: Carthage,TN
Posts: 187
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Steady Eddie:
Ethanol absorbs water. </div></BLOCKQUOTE>So thats why my ice cubes dont last!
__________________
2015 Jayco 26 C
Versa toad
2005 HD Road Glide Trike
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05-11-2006, 06:17 AM
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#10
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Senior Member
Newmar Owners Club Workhorse Chassis Owner
Join Date: Feb 2005
Posts: 255
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Can't remember exactly but I think that it can absorb 50% of its volume in water before separation occurs. Ethyl, Isopropyl and Methyl will all work, Methyl is the most corrosive. Isopropyl/Rubbing Alcohol is already 30% water so it isn't useful as an absorbant.
Just rambling through old memory banks.
__________________
Charlie and Lexanne
Loyal servants to Patches and Precious
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05-11-2006, 06:20 AM
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#11
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Senior Member
Join Date: Apr 2006
Location: The Great Pacific Northwet
Posts: 382
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Originally posted by Bigdaddy:
"So thats why my ice cubes dont last!"
Ethanol attacks rubber.
__________________
Steady Eddie/1999 KSCA 3357/P12 Chassis/454 Vortec L-21
Allison transmisson
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05-13-2006, 09:37 AM
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#12
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Senior Member
Join Date: May 2006
Location: Holland, MI
Posts: 495
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While the MH may handle the Gasohol the directions with my generator state to "NOT" use gasohol. Since I only have 1 fuel tank (thank goodness) I guess the choice is made for me. My experience with cars is that mileage will drop somewhat. My 2000 Grand Caravan is flexfuel but no one sells it around here.
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1999 Damon Challenger 310 Ford chassis
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05-13-2006, 09:53 AM
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#13
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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i just saw last Friday on the CBS Evening News where the state of Minnesota has over 200 FFV E-85 filling stations.
I learn stuff every day. Here I though that E-85 meant 85 Octaine equivalent when that's not true. It actually means 85% Ethanol content. Now that's a horse of a different color. 
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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05-13-2006, 11:52 AM
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#14
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Senior Member
Winnebago Owners Club Pond Piggies Club Appalachian Campers Mid Atlantic Campers
Join Date: Dec 2002
Location: Sarver, PA/Crystal River, FL/Shelocta, PA
Posts: 4,671
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Start thinking about 5 mpg if you could burn E85 in a motorhome.
__________________
Sarver, PA/Crystal River, FL/Shelocta, PA · FMCA 335149 · W3TLN 2005 Suncruiser 38R · W24, no chassis mods needed · 2013 Honda Accord EX-L · 2008 Honda Odyssey EX-L
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