98octane

98 octane refers to a specific grade of gasoline. The number 98 represents its octane rating, a measure of its resistance to knocking or pinging during combustion in an internal combustion engine. A higher octane rating indicates greater resistance to premature detonation.

In many countries, gasoline is classified by octane ratings, with common grades being 91, 95, and 98. 98 octane fuel is considered a premium or high-performance gasoline. It is typically used in vehicles designed for higher octane fuels, often high-performance engines, turbocharged engines, or engines with high compression ratios. Using a lower octane fuel than recommended in such engines can lead to knocking, reduced engine performance, and potential engine damage.

The octane rating is determined through a standardized test called the octane rating test. This test measures the fuel's ability to withstand compression before igniting. Fuels with higher octane ratings are less likely to combust spontaneously under the pressure and heat of engine compression, allowing for more controlled ignition by the spark plug.

Automakers specify the minimum octane rating required for their vehicles. Drivers should consult their vehicle's owner's manual to determine the appropriate fuel grade. While 98 octane offers superior anti-knock properties, it does not necessarily provide increased performance in engines not designed to utilize it. In such cases, the higher cost of 98 octane fuel may not offer any tangible benefit.