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Super Shell Nine Ingredient Engine Boost Promises Top Performance
Shell touts nine additives in Super Shell designed to boost cold starts, warm-up, mileage, and power. Quick-start butane and pentane improve cold starts and warm-up. Platformate from platinum catalyst raises energy. anti-knock mix raises octane. Alkylate and car-cracked fuels fight knocking. anti-gum protects carburetors. anti-icer prevents carburetor icing. TCP additive claims up to 15 percent more power and 17 extra miles per tank. test drives urged to feel the difference.
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Jimmy Doolittle