Is Premium Fuel Worth It? Premium vs Regular - 5 Vehicles Tested

Five vehicles tested to see if premium gas actually performs better. Every vehicle is tested with both 87 and 91 octane gas, though all of the vehicles recommend using premium gas. There's a car from Europe, the US, and Asia. Some are turbocharged with direct injection while some are naturally aspirated and port injected. Shell has hosted me at its labs in Houston and at pre-launch events for Shel

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