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Shell Premium with TCP Boosts Power and Sparkplug Life
Shell introduces TCP a fuel additive blended into Shell Premium Gasoline. The additive counteracts deposits on sparkplugs and in combustion chambers improving power by up to 15 percent and sparkplug life by up to 150 percent, with claimed mileage gains. Originally for aviation, TCP now marketed for civilian cars at Shell Dealer Stations to restore engine performance and reduce pre ignition and misfires.
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