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Let’s say your car isn’t configured to run on E85, but you’d still like to take advantage of the benefits offered by ethanol–like more power and a cooler-running engine. Can you run a smaller concentration to get some of the perks? Quite possibly.
Welcome to modern times, when most pump fuels contain some ethanol. It’s a renewable resource that also increases a fuel’s octane rating. Most pump gasolines carry the E10 designation, meaning they contain up to 10% ethanol.
E85, as the name suggests, contains even more ethanol. The standard, however, allows the content to range from 51% to 83%. By the way, ethanol content testers start at around $15.
While the extra oxygen found in ethanol allows an engine to make more power, there’s a tradeoff: More ethanol is needed to make that power, hence the need for higher-capacity injectors and fuel pumps. Plus, the fuel system components must be compatible…
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