Join Date: Oct 2006
Location: Green Bay, Wisconsin, USA
Make: GL1500 SE
If a lower octane is used in most engines it will not be an issue as long as the engine is not pushed to it's limits or "lugged." If the engine is running free and being happy it is not an issue. If you hear serious ping then it is time to downshift. Slight ping under heavy loads is actually a good thing. It is an indication that the motor has the correct octane.
Worked on the "big rigs" for 45 years now just riding my Wing whenever I can. Gets cold in Wisconsin.