What gas does the 2018 Chevrolet Silverado 1500 take?

It depends on the engine: regular gasoline for the 4.3L 6-cylinder, 5.3L 8-cylinder and 5.3L 8-cylinder hybrid; premium gasoline for the 6.2L 8-cylinder. The 4.3L 6-cylinder and 5.3L 8-cylinder are flex-fuel and can also run on E85.

Key takeaways

  • 12 EPA-certified configurations listed for the 2018 Chevrolet Silverado 1500.
  • Rated on premium: if the owner's manual says premium required, use premium; if it says recommended, regular works with some loss of power and economy.
  • Only the engines marked flex-fuel can use E85.
2018 Chevrolet Silverado 1500: every EPA-listed configuration
EngineTransmissionDriveRated fuelE85
4.3L 6-cylinder6-speed automatic4WDregular gasolineYes (flex-fuel)
4.3L 6-cylinder6-speed automaticRWDregular gasolineYes (flex-fuel)
5.3L 8-cylinder6-speed automatic4WDregular gasolineNo
5.3L 8-cylinder6-speed automatic4WDregular gasolineYes (flex-fuel)
5.3L 8-cylinder6-speed automaticRWDregular gasolineNo
5.3L 8-cylinder6-speed automaticRWDregular gasolineYes (flex-fuel)
5.3L 8-cylinder hybrid8-speed automatic4WDregular gasolineNo
5.3L 8-cylinder8-speed automatic4WDregular gasolineNo
5.3L 8-cylinder hybrid8-speed automaticRWDregular gasolineNo
5.3L 8-cylinder8-speed automaticRWDregular gasolineNo
6.2L 8-cylinder8-speed automatic4WDpremium gasolineNo
6.2L 8-cylinder8-speed automaticRWDpremium gasolineNo

Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov). Each row is one certified configuration; a trim or option not sold in a configuration is not listed.

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