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No. The V-10 does not have a knock sensor so it doesn't know what the octane of the fuel. What does matter is the weight of the gasoline (if it is hydrocarbon). Typically 87 octane gasoline blended in the summer in non-pollution areas with 10% ethanol weigh 6.25 lbs per gallon at 20 C degrees. Non-pollution controlled summer 93 octane gas weighs about 6.20 lbs per gallon. Winter blend and pollution area blended gasoline weighs less still. So using 93 octane gasoline with theoretically decrease the gas mileage by 0.8%. Take the ethanol out and you will get about 4% better gas mileage because ethanol has a much lower heat value per pound than gasoline.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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