diesel guys

I've never added anything to my fuel, waste of money if you ask me. I've had diesels since the first Cummins in a Dodge in 1989. I also have a diesel Jetta and am a Chrysler diesel master tech. They were designed to run on pure diesel without additives, the people that tell you sulpher was a lubricant are wrong, it's a corrosive so ULSD is actually better. This info is straight from Chrysler and if you have a newer diesel with the after treatment exhaust on it you'll probably be screwing that up by putting oils in the fuel and those parts are really expensive to replace.