Toyota Prius Forum : Toyota Prius Forums - View Single Post - What kind of gas do you use in your Prius? Premium or Regular?
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post #5 of Old 07-16-2012, 12:46 PM
mrtremere
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This is discussed to death in my Jeep forums.
Most of us with Lifted Wrangler JK unlimited get about 12-14 MPG.
The benefits of Premium vs regular is nil.

Premium vs. Regular | Car Talk

Octane is defined as a fuel's resistance to knocking. There is no benefit if the octane is higher than what the engine needs. Engine knock occurs when fuel in a combustion chamber ignites before it should. This disrupts the engine's operation. But electronic knock sensors are now common and have nearly eliminated engine disruption.
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