Re: Making Your Exhaust Smell Nice
I hate to be a killjoy but I think that if you want to keep your engine going without adding additional wear to your moving parts i would keep clear of anything but the required oil. The way my bike runs I get a bit of smoke at first but after it warms up it hardly smokes at all. Now I do use a tuned pipe so maybe it burns a bit cleaner than a stock motor but I would not add anything but just oil to your fuel.
Perhaps you could carry a sent bottle wherever you go and spray the air around you. Of course you know that would be adding quite a bit to the local air pollution.