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Old 08-02-2012, 06:15 PM   #11 (permalink)
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Originally Posted by Diesel Rules View Post
Thanks for the info guys!
I've heard alot about ethanol E20 and up damaging fuels systems too. Alot of gas stations in Michigan are allowed up to 20% before even posting it! I've had alot of luck with mobil gas, my wife gets around 25-28 city in her taurus 12 valve but using the discounted kroger gas up to $1.00 off she drops down to 19-22 it depresses me.
Most of the major problems I've heard have been boat related, eg people putting automotive gas in boat fuel tanks. But for automotive, I've heard of the occasional failed fuel pump, Neryls replaced the fuel pumps in his fleet, and up to 10% less MPG.

If it's factory approved for E10, odds are it'll be fine on E20.There isn't a huge difference in the composition once Ethanol is in the mixture. MPG will go down from less energy density, another -3% from E10, YMMV.

I heard about your state doing that but I thought they shelved the idea. Hmm. I wish Kentucky was more proactive about the blender pumps, myself. On the otherhand this year's drought means we'll be paying the same price per gallon for Ethanol as Gasoline, which is really my personal limit.

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Old 08-02-2012, 06:40 PM   #12 (permalink)
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That discounted Kroger gas comes from the same facility that handles bp, sunoco, and speedway.
..ie: non-Top Tier gasoline!
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Old 08-03-2012, 11:41 AM   #13 (permalink)
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You guys are full of good information and very intellegent! Hopefully I can retain all this good info!!
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Old 08-03-2012, 12:24 PM   #14 (permalink)
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..ie: non-Top Tier gasoline!
i stand corrected, i thought bp was top tier.
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Old 08-03-2012, 01:11 PM   #15 (permalink)
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I saw 8% difference in mpg with E0 vs E10, but the E0 was 90 octane and about 10% MORE expensive than E10 93, which made it about 20% more than 87 E10, OR, not worth it dollar/mile wise. That was before even having to drive the 60 miles each way to get it!

I'd run it if the price was the same, and right around the corner....
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Old 08-03-2012, 02:23 PM   #16 (permalink)
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I think what some of you are forgetting here is that ethanol is an octane booster. If you have a reasonably modern car with computer-controlled ignition timing &c (not to mention turbocharging), you should be able to get more power out of the gas because the engine can run at a higher effective compression.
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Old 08-03-2012, 03:10 PM   #17 (permalink)
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Originally Posted by ksa8907 View Post
i stand corrected, i thought bp was top tier.
...not according to the most current listing here:

Top Tier Gasoline

BP in USA is ARCO in most places.
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Old 08-03-2012, 03:13 PM   #18 (permalink)
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I think what some of you are forgetting here is that ethanol is an octane booster.
double edged sword.

while ethanol can be used to boost the octane rating of a decent fuel into something that can be used in a heavily boosted vehicle, it also allows for a really crappy base fuel to be bumped up into the category of 87 octane.

guess what's cheaper to make?
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Old 08-03-2012, 03:59 PM   #19 (permalink)
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OCTANE is a benefit if/when you can dynamically increase (ie: turbocharging) the engines' compression ratio so as to USE its higher knock resistance; otherwise, it's simply a GOOD thing that can NOT be used.
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Old 08-03-2012, 04:03 PM   #20 (permalink)
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VVT can also be used to dynamically alter dynamic compression, though obviously not to the degree that a turbo/supercharger can.

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