If you are not monitoring or "testing" your gas for alcohol and water content, we recommend replacement of gas in your fuel tank at least every 2-3 weeks to avoid alcohol and water related engine problems.
An Alcohol Fuel Test Kit will give you information you need,
Tests fuel for alcohol and water content. Inexpensive. Re-usable. Simple. Easy. Accurate. Fast!
Simple, easy, accurate. Mix small amounts water and fuel from pump or tank into the test tube included...View Test Kit Instructions...An increase in the amount of water on the gauge indicates that alcohol is present in the fuel. The gauge will also indicate the percentage of alcohol.
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Most owners of newer automobiles will have minimal problems with E10, when high quality gasoline is purchased, and fuel is replaced every 1-2 weeks. For all others, the effects of 10% ethanol in gasoline may be very different - View engine manufacturer ethanol recommendations and warnings.
Marine engines and all engines manufactured prior to 1998 have the greatest difficulty using and managing E10 fuel blends.
There are many disadvantages and controversey regarding widespread use of ethanol alcohol in the petroleum fuel supply.
While few dispute using ethanol to replace MTBE (now banned) as an oxygenator, using ethanol in all conventional gasoline is not a wise choice.
Consumers deserve and require "a choice at the pump",
so they can continue to use the best fuel type, recommended by their engine manufacturer.
Every town (and hopefully every public gas station) should supply all grades and types of fuel, which would include NON-ethanol -"100% gasoline", E10 and E85.
The disadvantages are far greater than the instability of E10 (E.G. water-absorbing and solvent qualities).
This website contains extensive detail on the problems and necessary precautions when using E10 gasoline.
We try to avoid discussion on state/federal government funding of ethanol (this includes tax credits, grants, mandates, etc.), and "corn fuel vs. food" discussions, since our primary focus is to help consumers to safely manage (or avoid when necessary) E10 fuel.
In addition to the gas usage issues present with ethanol, (short shelf life, water-absorbing properties, solvent and destructive effects to engine parts etc.), the governmental mandates to increase distribution of E10 and E85, has far-reaching financial, business, farming and fuel industry, consumer, medical, foreign relations and environmental effects.
For the most current information, review website index and contact Fuel-Testers for information and updates.
Many auto and marine engine manufacturers have issued ethanol warnings/bulletins this year, which state that using over 10% ethanol fuel will damage your engine and invalidate your warranty. View manufacturer recommendations.
Will the American Coalition for Ethanol succeed at increasing E10 to E15 for conventional engine use?