What type of gasoline should motorcycles use?
2 Answers
Motorcycles can use either 90 or 93 octane gasoline. Extended relevant information is as follows: 1. Compression ratio: Refueling should follow the principle of suitability. It can be determined based on the engine's compression ratio. For compression ratios below 9, 90 octane is sufficient; for those below 9.5, 93 octane is appropriate. If the compression ratio is high and the gasoline octane is low, it can easily cause knocking, damaging the engine. 2. Gasoline octane: Since engines with different compression ratios operate at varying temperatures, their requirements for anti-knocking also differ. For the same octane gasoline, the higher the engine's compression ratio, the more likely it is to produce greater knocking. Therefore, engine manufacturers generally specify the suitable gasoline octane for vehicles when they leave the factory.
Regarding the issue of fuel grades for motorcycles, I've been riding for over a decade and always use 95 octane gasoline, as most modern motorcycle engines are designed to be compatible with this grade. Using lower grades like 92 octane can cause the engine to make strange noises or even knock, damaging parts and compromising riding safety. I also recommend consulting the vehicle manual or asking a mechanic, as requirements may vary by model; for example, high-displacement sports bikes often require 98 octane for high-speed stability. Choosing the right fuel grade not only protects the engine but can also save on fuel costs. Never randomly use any fuel grade, especially before long trips—always check beforehand.
