Piston Slap: Tolerate the Government’s Ethanol Boondoggle?

David writes: Hi Sajeev, Is it worth the extra 40¢/gallon to go for 91 octane ethanol-free gasoline based on its durability merits? Hy-Vee grocery stores in Kansas City have gas stations that sell fuel at a discount with a grocery store card. Besides shopping there for our family anyway, it’s the only station near me that sells […]
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