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Notice the pink air/fuel line in the high-14 range.  At cruise, a 14.7:1 air/fuel ratio is 30 percent more fuel efficient than an 11:1 ratio.
Gas Mileage - Old School Meets New School

Notice the pink air/fuel line in the high-14 range. At cruise, a 14.7:1 air/fuel ratio is 30 percent more fuel efficient than an 11:1 ratio.  View Related Article

 

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