Yes, the Impala’s V-6 engines are flexible-fuel engines that can burn regular gas or E85, a blend of 85 percent ethanol and 15 percent gas. That means you can use either type of fuel, depending on what’s available at the pump or which you prefer. You can pump regular gas into the tank this week and fill it with E85 next week, and the computer that controls engine operations will adjust accordingly. The main difference is that E85 will yield less fuel economy because of its lower energy content.
This information is explained in more detail in the owner’s manual.
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