any one experience this problem?

[09C6ZR1]

while reading an article on the GM site.....(Winning the Green Challenge: Corvette Racing’s Greatest Victory)......I noticed an entry in a blog that made me wonder about performance and possible problems......can any one please inform me if they have experienced any of the problems brought up? <LI class=odd id=comment-73296>October 18th, 2008 at 12:54 pm John R While it is great to see GM racing Corvettes and being GREEN, it would be nice if GM took what they learned and understand what effects even E-10 gas has on your own products. Your race vettes do not have to worry about EPA or smog functions, nor does the engine even have to function for more then a few races. As owning and also working on Corvettes, most are used for grass roots racing I see a real surge of Corvettes running poorly due to use of E-10 My own 1999 C5 500 HP LS1 when getting bad tank of E-10 within 20 miles of fillup go from a perfect +/- 2% fuel trims to plus 25 lean. Adding gas treatment or octane booster products do not correct the problem. Most cases the signs of E-10 are seen using a OBD-II scanner on C5 and C6s where the Long Term Fuel trims are reporting the maximum allowed +25 % lean while other feedback sensors report correctly. Corvette owners feel surging and lack of power when engine goes into power enrichment mode. Add boost like supercharger and the problem is felt even worse. In researching this indepth I find that gas suppliers buy fuel from different sources due to some gas makers not making E-10 but the state car is in requires E-10 thus different brands of fuel are being bought and mixed where each gas maker uses different compounds that when mixed have bad effects overall. In talking to Chevy dealers they say they see a high increase of cars coming in with powertrain issues and have to empty the gas tanks. In fact it has been seen when a dealer sells a new car and fills the gas tank before giving the car to new owner that shortly contacts the dealer wanting to reverse the car purchase as new car running badly. Ends up it was the E-10 gas. In talking with testlabs that test gas have told me many gas samples sent to them have shown the corn based E-10 mixed by suppliers causes the different gas makers compounds to mix and create unwanted end results. Thus even new GM cars/light trucks are not designed to function well with this green world, nor are there clear OBD-II GM enhanced parameters to quickly pinpoint when bad E-10 has caused ill effects to the powertrain and making the owners assume GM has bad product design and are not happy with the car’s performance. It is one thing to market E-10 as being greener but a car like a Corvette with 400-650 HP stuck using 91 octane E-10 does not function well on the street that a 200 HP car does but worse when using that Corvette in grass roots racing. GM needs to finally see this issue, promote ways for others to see this problem and how to correct it as many service shops including dealers are assuming it is a bad fuel pump needing replacement when it is not the problem 2nd issue with GREEN gas is the fumes it produces in the fuel tank which attacks the electronic card in tank causing the fuel gauge to report incorrectly or even state the tank is empty when it is far from it.

[1 BAD ZR1]

I've never heard of or seen E-10 fuel. I guess we don't have that down here in the south. It's very hard to even find E-85.

[redknight]

Originally Posted by 1 BAD ZR1

I've never heard of or seen E-10 fuel. I guess we don't have that down here in the south. It's very hard to even find E-85.

I believe all fuel at least in the northeast is e-10 or 10% ethanol. Perhaps it is different in other parts of the country. I seem to get about 8% better fuel mileage when I fill up in VA and drive to NJ then when I fill up in NJ and drive to VA