What Happens When Using 98 Octane Gasoline for Motorcycles?
2 Answers
It can be used normally, but the compression ratio of a motorcycle engine cylinder is not as high as that of a car, which may lead to incomplete combustion and a decrease in power. Here are some relevant introductions: Precautions for refueling motorcycles: It is strictly forbidden to use the fuel gun directly to refuel the motorcycle. The engine must be turned off in the designated area of the gas station. Use a fuel can with good conductive properties specially designed for gas stations. It is strictly forbidden to take the remaining gasoline out of the station. Precautions for using motorcycles: Do not leave it unused for a long time. Do not modify it without authorization. Do not start immediately after unlocking. Do not accelerate sharply just after starting. Do not wash the car excessively. Do not let strong magnets get close to the ECU. Non-professional testing is not allowed.
I'm an experienced motorcycle modifier who once tried using 98-octane fuel in my Kawasaki. Theoretically it has better anti-knock properties, and indeed the engine sounded more stable at high RPMs on the track. But most motorcycles have compression ratios between 9:1 to 11:1, which simply don't require 98-octane's high knock resistance - you're just wasting money with no real benefit. Long-term use can actually lead to incomplete combustion, causing worse carbon buildup than 95-octane fuel. Last time I opened the engine, the piston crowns were completely blackened - the mechanic said it was from prolonged high-octane fuel use. Now I strictly follow the manual using 92 or 95 octane, and putting the saved money toward better tires is much more practical.
