I recently picked up a small metalic can of their injector cleaner. It is the stuff designed to be adde3d to the fuel tank. It is about the size of a can of Donald Duck Orange juice with the pull tab. It has a warning on the side to add to a full tank of gas. It also says that you should run the whole tank through in one week or less to avoid damge to fuel lines or other fuel componets. It lists petrolem distillates, amines and butyl cellulose as the ingredients. I have never seen a warning with a time frame for use on it before. Anyone else here ever use this stuff? It must be very potent.