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PSA; I get 2mgp more on Shell 91oct than on BP/Amoco 92oct.

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Old 05-16-2008, 08:59 AM
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PSA; I get 2mgp more on Shell 91oct than on BP/Amoco 92oct.
Old 05-16-2008, 09:01 AM
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Measured over several tank fulls or just 1?
Old 05-16-2008, 11:01 AM
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Default It is not unheard of...

..for distributors and station owners to substitute lower octane fuel in place of "Super".

In fact, I know of a station in Salem, OR that had all three pump types hooked up to the same underground tank.

Octane testing is expensive and takes time, so nobody actually does it unless there's a complaint. I'm thinking of doing that here - if my WOT ping isn't solved soon. I'm going to test with straight toluene soon...
Old 05-16-2008, 11:09 AM
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Sunoco gas is great too if you can find it as well as Mutual
Old 05-16-2008, 11:30 AM
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Default I don't do the math every time but I the drop is noticable when I use BP.

I usually use Shell.
Old 05-16-2008, 02:48 PM
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My Audi Tech buddy and I have had similar experiences. Shell is the best for mpg, IMO.
Old 05-16-2008, 04:50 PM
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I only use Shell 93....Period end of story. And none of that E10 Crap.
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Quick Reply: PSA; I get 2mgp more on Shell 91oct than on BP/Amoco 92oct.



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