91 Ethanol Free vs 93 / 10% Ethanol
Up until this spring, I always filled up my TAs at the local BP station which was the only station in town with 93 octane fuel. Every other station had 91 octane as its premium. Well, this year BP changed its fuel and still offers 93 octane, but now all their fuels are 10% Ethanol Blend - it used to be that only their lower octane fuels had ethanol.
So, I can go down the street and get 91 octane with no ethanol or I can get 93 with 10% blend. Not sure which way to go here. Maybe stick with the BP fuel and run Gibbs Carb Defender?
If I run the no ethanol 91 and find my car misses the extra 2 points, does anyone make an octane boost product that does NOT leave red deposits in the combustion chambers and on spark plugs?
Thank you.
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