See also:

E-85 fuel
E-85 fuel is a mixture of approximately 85% fuel ethanol and 15% unleaded gasoline. E-85 can only be used in a Flexible Fuel Vehicle (FFV). Do not use E-85 fuel in your vehicle. U.S. government ...

Octane rating tips
Using unleaded gasoline with an octane rating lower than recommended can cause persistent, heavy “spark knock.” (“Spark knock” is a metallic rapping noise.) If severe, this can lead to ...

Performance
If you're a car enthusiast, a car with a standard 290-horsepower V-6 engine probably sounds like a good thing. If you kept researching and learned that the power goes to the front wheels via a CVT ...