In my part of Florida most of the gas stations are selling Ethanol blended fuel or E10 gasoline. Here is a good link to learn more about it http://www.fuel-testers.com/about_ethanol_fuel.html I will post some highlights here and tell you about our experiences with it. Here are the basics Ethanol gasoline fuel is commonly called E10, E85, corn fuel, alcohol fuel and reformulated, renewable fuel and gas. 10% ethanol gasoline can dissolve 50 times more water than conventional non-alcohol gasoline. E10 gasoline contains 10% ethanol alcohol and E85 contains 85% ethanol alcohol. Over 10% ethanol content in gasoline will damage conventional engines. Ethanol is hygroscopic (will absorb water), and is an excellent solvent (dissolves materials). Ethanol is added to gasoline at the pumps because of risk of water contamination when traveling through the pipelines. Unlike MTBE, water will actually dissolve in an ethanol blended fuel and phase separation occurs much sooner. Phase separation happens in E10 gas, when only 0.5% water or 3.8 teaspoons water per gallon of fuel is absorbed. Ethanol alcohol, an excellent solvent, can dissolve fuel system parts, rubbers, plastic, certain fiberglass, and even aluminum. The rubber that is used in fuel system parts, such as seals and hoses, may shrink, swell, or lose strength when exposed to ethanol reformulated gasoline. Ethanol releases less energy and compared to non-alcohol fuels, it gets a lower mpg rating. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Florida is surrounded on 3 sides by what? Water! so lets makes some gas that is really good at absorbing water and sell it for the same price as regular fuel sounds great doesn't it! :grrrrrr: Most of you can remember when people used to steal gas and fill the tank up with water so the boss wouldn't know and then you would come in and get that gas and your car would buck and spit and wouldn't go well this stuff is kinda like that except the water is absorbed from the air in the in-ground tank and then from the air in your gas tank unless its kept full. We have bought gas and not a block down the road the truck couldn't even get up highway speeds without stalling. I was having some pinging in the engine so did a experiment bought some 89 vs the 87 and the ping stopped so then drove over to another town where the gas comes from GA and get regular gas 87 octane and no issue at all. Now I'm not a engineer but I can tell when my truck is not running right and its fuel related. The E10 is supposed to have no more than 10% Ethanol but who checks it? How do you know that somewhere along the way its getting cut more than once to make it go farther. Now I know many people say well I only buy this brand or this brand never this brand well I can tell you from watching the trucks fill up over off of Hecksher Drive in Jacksonville Florida that there will be 5 different truck with 5 different brands all filling up at the same depot. The convenience stores around here have one truck that comes in and fills all the tanks in town with no lable other than Florida Rock on it same truck fills the same top brands. Now if E10 is not so bad then why do they not allow it in airplane engines and why do some boat companies tell you not to use it. It does not save cost since it cost more to grow the corn to make the ethanol is more than the savings. Here is some more info from fuel tester alot of this I had to learn the hard way LOL Precautions/Tips For Use of E10 Gas 1. Test gas for alcohol presence and to assure it is below the legal limit of 10%. Gas alcohol levels above 10 percent can cause major damage to many engines. Many pumps do not label when ethanol alcohol is added. Inexpensive portable Fuel Test Kits that check presense of water and alcohol in gas are now available. 2. Replace the gas in your fuel tank at least every 2-3 weeks. The shelf life of E-10 gas is only 3 months (90-100 days) under ideal environmental conditions. 3. Know the specific fuel laws for your state. Many states still do not require the labeling of E10 gas at the pumps. View state ethanol labeling laws here: http://www.fuel-testers.com/state_guide_ethanol_laws.html 4. Check your owner's manual for fuel type recommended. Older engines (prior to 1998) and several luxury vehicles do not permit the use of alcohol fuels. Many lower-priced and high mileage automobiles experience performance problems and part damage from the use of E10 gas. 5. Prevent external water and moisture (high humidity) from coming in contact with E-10 gas. 6. Ethanol-blend fuels will lower MPG in most engines; Fuel efficiency can decrease by 2-40%. Maintain your engine to provide the best possible fuel efficiency. (Inflate tires, keep tuned, etc.). View more information on fuel efficiency and mpg of E-10 gas. 7. Chose an octane level above 90, for an added level of security when purchasing E-10 gas, If water contaminates (WC) your gas, the fuel will dilute and the octane level can drop up to 3 points. 8. Avoid all fuel additives and fuel system treatment products that contain ethanol or are alcohol-based, Most octane boosters and fuel system cleansing products contain alcohol. View gas additive list. 9. Become familiar with symptoms and effects of "bad gas", often caused by too high alcohol levels of gas. Symptoms include varied engine malfunction including stalling, hesitation during WOT, smoke released from exhaust, clogged fuel filters and carburetors, damage to fuel and VRO pumps and pistons, disintegration and dissolving of engine parts (especially rubber and plastic), drying-out of parts (hoses), and more. 10. Save money - Contaminated gas can not be restored to the original composition. No miracle product exists that will effectively prevent all water absorption or safely repair phase separation (PS) of gas. 11. Frequently check gasoline tank for signs of Water Contamination (WC) and Phase Seperation (PS). Two or three distinct layers will be seen after WC and PS occur. 12. Check the engine warranty for details and consequences of alcohol fuel use. Most engine warranties exclude repairs caused by the use of fuel containing a high content of alcohol. 13. Install a water-separator filter (10 micron or better), 14. Store E-10 and E-85 ethanol gas in clean and dry alcohol-resistant tanks. Fuel discoloration indicates gas contamination, often caused from the release (cleansing) of rust, dirt and sediment from the gas tank walls. 15. Properly discard any fuel that appears to have gone bad. 16. Keep your engine well tuned and lubricated and follow the manufacturers recommended maintenance schedule. Replace parts that are not resistant to alcohol, Plastic and rubber parts and hoses are most vulnerable. Fuel system and pumps, piston and carburetor and timing may need changes to be compatible. Older engines often contain parts not designed to resist ethanol/alcohol. 17. Be aware that "private" gas pumps (EG. marine refilling stations) are not required to follow the same laws that pertain to public gas stations. 18. Airplanes (all aircraft) are exempt from using ethanol blends and all alcohol fuels. 19. Many types of engines are not designed for the use of alcohol fuel. This may include older cars and outboards, lawn and other small gas-powered equipment. Only during the past 5-10 years, have the manufacturers' re-designed engines, when necessary, to be compatible with E-10 gas. 20. Consider purchasing an E85 Flex-Fuel vehicle. E85 compatible engines contain parts specifically designed to withstand alcohol's negative effects, which will dramatically decrease your risks when buying E10 and other alcohol-blends of gas.