Fuels splash octane

Octane ratings  

Understanding octane ratings

About octane ratings

Octane rating is a measure of a fuel's ability to resist ‘knock.’ The octane requirement of an engine varies with compression ratio, geometrical and mechanical considerations, and operating conditions. The higher the octane number, the greater the fuel’s resistance to knocking or pinging during combustion.

The octane ratings of Synergy™ gasoline

  • Synergy™ Regular Gasoline – Octane 87
  • Synergy™ Extra Gasoline – Octane 89
  • Synergy SUPREME+™ Gasoline – Octane 91-93

The right octane level for your vehicle

Be sure to check your owner’s manual for the recommended octane level for your vehicle.

Have a question about octane ratings?

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*Fuel economy improvement is based on Synergy-branded gasoline compared to gasoline meeting minimum U.S. government standards. Actual benefits will vary based on factors such as vehicle type, driving style and gasoline previously used.

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