Difference between gas octane

Gas Pump Octane

Gasoline octane ratings represent the fuel’s resistance to knocking or pre-ignition in an engine. Higher octane fuels are more resistant to knocking and are commonly used in high-performance or high-compression engines. Here’s a breakdown of the differences between 87, 89, and 93 octane gasoline:


87 Gas Octane: 87 octane gasoline is the standard or regular gasoline that you typically find at most gas stations. It is suitable for most everyday vehicles, including sedans, SUVs, and smaller engines. This fuel is less expensive compared to higher octane options, but it has a lower resistance to knocking. If your vehicle’s manufacturer recommends using 87 octane fuel, using higher octane gas won’t provide any additional benefits.

89 Gas Octane: 89 octane gasoline, often labeled as mid-grade or plus gasoline, offers a slightly higher resistance to knocking compared to 87 octane fuel. It is often recommended for vehicles with engines that require a bit more octane to run optimally. Some mid-range performance vehicles or turbocharged engines may benefit from using 89 octane fuel. However, it’s important to consult your vehicle’s owner’s manual or manufacturer recommendations to determine the appropriate octane level.

93 Gas Octane: 93 octane gasoline, also known as premium or super gasoline, has the highest resistance to knocking among the three options mentioned. It is typically used in high-performance or luxury vehicles, as well as sports cars and engines with high compression ratios. Engines designed to run on higher octane fuels may experience improved performance and efficiency when using 93 octane gasoline. However, using premium fuel in a vehicle that doesn’t require it won’t provide any significant benefits.


It’s worth noting that using a higher octane fuel than what your engine requires doesn’t result in better performance or efficiency. The octane rating should match the manufacturer’s recommendations or requirements for your specific vehicle. Always consult your owner’s manual or contact the manufacturer if you’re unsure about the appropriate fuel type for your engine.