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Originally Posted by gonavy
Having said all this, look through my posts and recall that I am a HUGE booster of ETOH. Its in my (non-FFV) Explorer, despite having to pay 0.50 more per gallon for it here, only being able to get it at one pump locally, and getting yelled at by my wife for the check engine light (code 0174- lean mix). I also run straight ETOH/H20 (~160proof) through my mower when not using the battery mower and have gotten 2 neighbors to use me as a fuel source for their mowers.
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Did you have to do anything different to get it to run right, such as re-jet the carb or something? From what I've read, you need to run a significantly richer mixture on ethanol than gasoline. There's only one E85 pump in Arizona too, and it's about a hundred miles from my home. Maybe if they put one a little closer I could try it out in my mower too. I only use mine maybe an hour per year though. Tiny yard, and grass doesn't grow so fast in the desert with a miserly watering schedule.
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Originally Posted by martinjlm
Gonavy is on the money with respect to E85 capability to certify as AT-PZEV. The issue is not so much the emissions, but the evaporative qualities of ethanol wrt the evaporative qualities of gas. Getting the vehicle certify as having no evaporation from the fuel tank during heat soak cycles is the issue. There are smart people working on solutions.
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I'm just curious here, but why does evaporative emissions really matter on E85 anyway? I mean ethanol is non-toxic, who cares how much of it evaporates? I would think that if it mattered, we'd have to close up every bar and restaurant that serves alcohol and only offer it in sealed containers with some sort of anti-evap straws on them.
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Originally Posted by Sledge
These E85-compatible engines as they are will get terrible FE running on E85. Saab's BioPower engines are set up to give the same FE and HP running on E85 as they do on regular gas. When are BioPower engines going to show up in the US?
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A quick trip over to
FuelEconomy.govshows the FFV Suburban rated at 16mpg combined on gasoline and 12mpg combined on E85. I've read that as they perfect FFV's they hope to close the gap to around 80-85% as good FE on E85 as on gasoline, which seems very much worthwhile to me. Even the 75% it now achieves doesn't seem bad to me for a mostly non-toxic fuel.
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Originally Posted by IMAhybrid
What the heck is "extra full size"?
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Vehicles like the Suburban/Yukon XL (aka GMC Suburban) are so much larger than what today qualifies as a full-size truck/SUV that it's not really fair to call it the same class as a Jeep Grand Cherokee or Ford Explorer, which is what most folks think of when they think full-size SUV.