 cleaners that are put in there and lubrication in order to keep the fuel better for your injector pump and and the the injectors and things there's got to be a lot of politics involved in this because to me if they take the sulfur and the lubrication additives out of the diesel fuel for emissions right let's let's make them cleaner but then a company can add in fuel additives in order to get them to be good for the vehicle so now everybody's running these fuel additives