Octane is a rating of the amount of fuel that can be compressed before spontaneously igniting (from pressure versus a spark). The number measures its ability to resist knocking as it burns. The higher the octane, the less the chance you will experience engine knock.

Most of it is stripped out during the gasoline refining process. Canadian Tire gasoline contains less than 150 parts per million (ppm) in compliance with fuel standards.

There are National and Provincial regulations that define energy policy and the use of renewable fuels. Some provinces require fuel that contains ethanol. Gas+ offers two ethanol grades. Our fuels comply with all renewable fuel regulations which typically involve an Ethanol blend containing a mix of regular gasoline and fuel grade ethanol. At our locations with renewable fuel content, our 87 octane E10 fuel has up to 10% ethanol content and our 89 octane fuel (mid-grade) has up to 5% ethanol content.