See also:

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

IBA system operation
The IBA system will function when your vehicle is driven at speeds of approximately 10 MPH (15 km/h) or above, and when the vehicle’s speed is approximately 10 MPH (15 km/h) faster than that of the ve ...

When traveling or registering your vehicle inanother country
If you plan to travel in another country, you should first find out if the fuel available is suitable for your vehicle’s engine. Using fuel with too low an octane rating may cause engine dam ...