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Old 09-09-2011, 10:49 PM   #33 (permalink)
Frank Lee
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Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
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The top end doesn't need any lube from fuel. Couple that with knowing that oil in the combustion chamber does only bad things, and I think it's prudent to say simply don't add any stuff to the fuel, at all.

You may think one tank did better than another because of it, but tank-to-tank variations are often quite high due to external factors.

You don't even have a fuel log here for us to look at.

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