24% Ethanol
08-02-2010, 10:04 AM
#21
No one uses bare aluminum anywhere near any fuel. Its always coated. Thats why -AN fittings are that pretty blue and red.
The OK state paper is not relevant because gasoline itself caused swelling in their rubber.
"All automotive rubber and elastomers tested showed some swelling, change in tensile strength and elongation from being immersed in various ethanol blends and pure gasoline."
Still have not read 1 paper stating that E85 will be "more pronounced"
I'd love to see a teflon lined braided hose bigger than -8an also.
E85 Misconceptions run rampant in the forums and are hard to stop when they keep getting repeated.
some other reading
http://www.flexfuelkit.com.au/articl...ths/Page1.html
The OK state paper is not relevant because gasoline itself caused swelling in their rubber.
"All automotive rubber and elastomers tested showed some swelling, change in tensile strength and elongation from being immersed in various ethanol blends and pure gasoline."
Still have not read 1 paper stating that E85 will be "more pronounced"
I'd love to see a teflon lined braided hose bigger than -8an also.
E85 Misconceptions run rampant in the forums and are hard to stop when they keep getting repeated.
some other reading
http://www.flexfuelkit.com.au/articl...ths/Page1.html
http://www.ethanolmt.org/switch.html
Just a fast search from people that transport ethanol. Why would they anodize all their aluminum and change out rubber components if it wasn't a problem?
http://pods.dasnr.okstate.edu/docush...AE-1746pod.pdf
ohio state university. they only tested e10 and e20. Found both to be "ok" and "shouldn't" cause engine failure but changes in metals and rubbers were noted with both fuels.
So with e20 there is some swelling and degregation. e85 will be more pronounced. Wouldn't be an instant problem but i sure wouldn't want to try to fix it after it breaks down some rubber and pieces are floating around in the tank.
ALso, if it wasn't an issue at all, why would GM upgrade all their seals and fuel lines to teflon before approving the vehicle for flex fuel? Seems they have quite a bit more on the engineering side than the average consumer.
Just a fast search from people that transport ethanol. Why would they anodize all their aluminum and change out rubber components if it wasn't a problem?
http://pods.dasnr.okstate.edu/docush...AE-1746pod.pdf
ohio state university. they only tested e10 and e20. Found both to be "ok" and "shouldn't" cause engine failure but changes in metals and rubbers were noted with both fuels.
So with e20 there is some swelling and degregation. e85 will be more pronounced. Wouldn't be an instant problem but i sure wouldn't want to try to fix it after it breaks down some rubber and pieces are floating around in the tank.
ALso, if it wasn't an issue at all, why would GM upgrade all their seals and fuel lines to teflon before approving the vehicle for flex fuel? Seems they have quite a bit more on the engineering side than the average consumer.
08-02-2010, 07:44 PM
#22
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This is true, the research didn't conclude exactly but they also were only using e20.
There is no research or fact backing up that myths page either. No sources, journals, etc...so how do we know that's even the truth?
Fact that we all know: every manufactured car built for flex fuel uses teflon based seals and hoses. Why would they go to all that expense if the standard hoses and seals were perfectly ok to use on e85? I'm sure a large manufacturer wouldn't spend the thousdands of dollars in upgrades if they didn't have to. They must know something.
There is no research or fact backing up that myths page either. No sources, journals, etc...so how do we know that's even the truth?
Fact that we all know: every manufactured car built for flex fuel uses teflon based seals and hoses. Why would they go to all that expense if the standard hoses and seals were perfectly ok to use on e85? I'm sure a large manufacturer wouldn't spend the thousdands of dollars in upgrades if they didn't have to. They must know something.
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