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- RattyMcClelland
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But it also saysDonald wrote:Also, Preludes are not E10 compatible.
Found this just now from Honda themselves (http://engines.honda.com/parts-and-supp ... mendations):
The only Honda vehicles that are ethanol fuel compliant up to E10 are:Using fuels with percentages of ethanol or methanol higher than 10% (E10) will cause starting and/or performance problems. It can also damage metal, rubber, and plastic fuel system components that are not covered under the Distributor’s Limited Warranty.
Ethanol has 28% less energy density than gasoline, so it reduces fuel efficiency. Ethanol contains less energy value than petrol. In theory, some loss of power and fuel economy (possibly 2-3%) may occur when using E10 fuel.
Ethanol is an excellent solvent, drying agent and cleanser. It will clean or dissolve some parts of, and deposits in, fuel storage and fuel delivery systems, including some fuel tank materials. The dissolved material can clog filters or pass through and leave deposits on fuel injectors, fuel pumps, fuel pressure regulators, carburetor jets, intake tracts, valves, and valve guides.
In addition, ethanol in the gasoline attracts water. Initially it mixes with the ethanol, but at higher concentrations it separates and settles to the lowest point, which leads to corrosion and starting and running problems. The lower the fuel level in the tank, the more likely you will experience water contamination.
E85 is an alternative fuel. It is not gasoline. It is made by combining 85% ethanol with 15% gasoline. Honda engines are not currently certified or designed to run on E85 or any other alternative fuel.
Accord 2003 onwards
Accord Euro 2003 onwards
City 2009 onwards
Civic Range 2004 onwards
CR-V 2003 onwards
CR-Z 2011 onwards
Insight 2004 onwards
Integra 2004 onwards
Jazz 2004 onwards
Legend 2007 onwards
MDX 2003 onwards
Odyssey 2004 onwards
S2000 2004 onwards
So we're good right?Honda engines are designed for good performance and efficient operation using gasoline containing from 0 to 10% ethanol.
- Donald
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No.
We fall in the 0% category of Honda engines that can run on 0 to 10% ethanol.

http://www.honda.com.au/cars_for-owners_ethanol.aspxDonald wrote:The only Honda vehicles that are ethanol fuel compliant up to E10 are:
Accord 2003 onwards
Accord Euro 2003 onwards
City 2009 onwards
Civic Range 2004 onwards
CR-V 2003 onwards
CR-Z 2011 onwards
Insight 2004 onwards
Integra 2004 onwards
Jazz 2004 onwards
Legend 2007 onwards
MDX 2003 onwards
Odyssey 2004 onwards
S2000 2004 onwards
We fall in the 0% category of Honda engines that can run on 0 to 10% ethanol.
- andyconnolly
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- jjmartin349571
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Ok, I've had a quick read online and apparently not all petrol will be to E10 standard. Also, E10 pumps will be clearly labelled as being E10 petrol and carry a warning that not all vehicles are compatible with it. E5 petrol will still be available, mainly being the super unleaded variants.
Source:
http://www.mag-uk.org/en/campaignsdetail/a7099
I run all my cars on super unleaded anyway so should be ok. Don't know what we'll do after 2020 though
Source:
http://www.mag-uk.org/en/campaignsdetail/a7099
I run all my cars on super unleaded anyway so should be ok. Don't know what we'll do after 2020 though

- littlefeller
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- jjmartin349571
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IMHO E10 won't make any real difference. Stock fuel maps on the prelude are pretty rich anyway, so I doubt it'll go lean at WOT. And for the rest of the time the O2 sensor & ECU will keep the fuel ratios in check. So far as the ethanol eating the seals etc. again I doubt this is going to happen, and hey even if it does it's just a case of renewing the few that exist in the fuel system with newer ones which will almost definitely be compatible.