What is 89 octane fuel?

89 octane fuel is a grade of gasoline with an octane rating of 89. The octane rating is a standard measure of the fuel's resistance to knocking or pinging during combustion in a car's engine. A higher octane rating generally means the fuel is less likely to knock under high compression.

While 89 octane is suitable for many vehicles, it's important to check your car's owner's manual. Some vehicles require higher octane fuel (like 91 or 93) for optimal performance and to prevent engine damage. Using a lower octane fuel than recommended can lead to knocking, reduced performance, and potentially engine damage over time. Using a higher octane than recommended won't generally harm the engine, but it won't provide any additional benefit.