Thread: Question on gas
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Old 10-05-2011, 10:12 AM
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snrusnak snrusnak is offline
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All the previous posts seem dead on....they recommend 89 octane because of the amount of compression and timing advance in the engine....87 will not hurt the engine, but if the knock sensor sees pinging/detonation it will retard timing and you will lose some mpg/performance. Some people say they get much better mpg/performance with the higher octane and some say they don't notice a difference, you'll have to experiment. Some say they even see better results with 91/93 octane as well, but I think that's usually not the case. Running a higher octane than required will never cause damage, but will cost more. You should run the lowest octane you can without causing pinging and loss in performance/mpg (to get the most for your money). I would definitely recommend ethanol free gas, you WILL get better mpg and peformance with it, like he said above ethanol has less energy per volume than pure gasoline.
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