Miata Turbo Forum - Boost cars, acquire cats. - 91 or 93 octane for stock MSM?

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lpaudio2

02-21-2015 10:52 PM

91 or 93 octane for stock MSM?

Where I live I can either get 91 without ethanol, or 93 with ethanol, which would be better for a stock MSM? Both are from high volume, name brand, top tier gas stations.

my97miata

02-22-2015 03:22 PM

Use whatever the owner's manual say to use. Don't waste your money.

lpaudio2

02-22-2015 09:54 PM

actually cost is the same here, and the manual doesn't cover the impact of ethanol. Im genuinely curious, what if any impact the ethanol has on turbo cars.

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