Ethanol vs Non-Ethanol Gasoline ~ Which is Better?

Ethanol vs Non-Ethanol Gasoline ~ Which is Better
 

Is non-ethanol gasoline really better for fuel efficiency? What about carbon buildup?

In this video Project Farm uses a generator with electronic fuel injection to measure fuel efficiency, an engine with a see-through cylinder head to observe the combustion process, and an additional small engine to measure carbon buildup…

 
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