Just as an example, Stihl recommends high octane (89 or 91 I cant remember) for use in their 40:1 trimmers. When I was running them working for the city we always had 87 in them, but I wasnt there in the hottest of months (March-early June).
Lets say I have a sportbike that requires 93. Would I be safe to run 87 in all but the summer months. My question, I guess, is since pinging is the reason I believe some engines require high octane (high compression) and they only ping when they get hot so they're just playing it safe by recommending high test all the time?
Sorry I don't know how to word it correctly, but I think you get the point.
Lets say I have a sportbike that requires 93. Would I be safe to run 87 in all but the summer months. My question, I guess, is since pinging is the reason I believe some engines require high octane (high compression) and they only ping when they get hot so they're just playing it safe by recommending high test all the time?
Sorry I don't know how to word it correctly, but I think you get the point.