Such risks are, understandably, higher for E85-rated fuel than E10 (10% ethanol) or E15 (15% ethanol), due to the elevated presence of the substance (as much as 85%) in its mixture.

While E10 is the most common ethanol-based fuel, E85, a blend of 85% ethanol and 15% gasoline, has a higher octane rating and burns cleaner. Today many vehicles can burn E10, which has a lower ...

read this full Auto News article at Truck Trend: Research findings released today show that mid-range ethanol blends--fuel mixtures with more ethanol than E10 but less than E85--can in some cases ...