Originally Posted by Donger
My car requires 93 octane. It will run on less, but performance is reduced. Therefore, I purchase premium.
Yes, putting high-octane/premium gasoline into a vehicle that does not require it is a waste of money. There is no increase in performance or mileage. If your engine is pinging or knocking, however, high octane fuel might solve that.
If you are uncertain, look at your owner's manual or inside your gas cover.
I have a 97 Nissan 2wd light truck, don't think anything will be different per octane use but I'll check my owners manual anyway.