High-octane and standard grade petrol (gasoline) differ in their octane ratings, which is a measure of a fuel's resistance to knocking or pinging in an engine. The octane rating indicates how much compression a fuel can withstand before it ignites prematurely.
In general, high-octane fuel has a higher octane rating than standard grade fuel. It is designed for engines with higher compression ratios, such as those found in high-performance or sports motorcycles. These engines generate higher levels of heat and pressure, which can lead to knocking if lower-octane fuel is used. High-octane fuel helps prevent knocking and allows the engine to operate optimally under these conditions.
On the other hand, standard grade petrol has a lower octane rating and is typically suitable for most motorcycles that have lower compression ratios or less demanding engine requirements. It may be more cost-effective and widely available compared to high-octane fuel.
Some motorcycles come with both options at the pump to accommodate different engine types and performance levels. This allows riders to choose the appropriate fuel based on their motorcycle's specifications and the manufacturer's recommendations. If a motorcycle's manual specifies the use of high-octane fuel, it is important to follow those guidelines to avoid potential engine damage or reduced performance.
It's worth noting that not all motorcycles necessarily require high-octane fuel. Using higher octane fuel than required by the engine's design typically does not provide any additional benefits and can be an unnecessary expense. Therefore, it's recommended to consult the owner's manual or contact the manufacturer to determine the appropriate fuel type for a specific motorcycle model.