What is an Octane rating and why is it important?
Octane number is a measure of gasoline’s antiknock performance – its ability to resist knocking (a metallic pinging sound) as it burns in a vehicle’s engine. When you compare gasoline prices among stations, be careful to compare prices for the same octane. Using high octane gasoline in an engine that is designed for a lower octane is usually not recommended unless your engine knocks. Check your vehicle owner’s manual to see which octane the manufacturer recommends.
