What Canadian grade of gas is to be used?

In Canada, the most commonly used grades of gasoline are regular (87 octane), mid-grade (89 octane), and premium (91-94 octane). The type of gas you should use largely depends on your vehicle's requirements, which can typically be found in the owner's manual. Regular gasoline is suitable for most vehicles, while premium gas is recommended for high-performance or luxury cars that require higher octane levels. Always refer to your vehicle's specifications for the best guidance.