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They are essential for ensuring the accuracy of emission measurements and the performance of vehicles. The major difference between ‘reference’ gasoline and regular or premium fuel is their octane numbers. Regular gasoline has an octane variety of 87, premium gasoline …

They are essential for ensuring the accuracy of emission measurements and the performance of vehicles. The major difference between ‘reference’ gasoline and regular or premium fuel is their octane numbers. Regular gasoline has an octane variety of 87, premium gasoline …