Supper diesel on normal diesel engine makes the engine running dry. Super diesel has less sulphur. Auto diesel has more sulphur. Sulphur vapor in cylinder lubricate the components. Less sulphur means less lubrication. This leads to engine fault. it is like running your two stroke engine without 2T. So, if you are runing auto diesel vehicle with super diesel, add some lubricant to the tank. but I cannot recommend what is it and how much :)
Using auto diesel in engines need super diesel also a problem. It doesn't expect this more sulphur vapora nd impurities. It sneak in to engine and let you change your engine oil more frequent. Also it blocks injectors and exhaust system with these impurities and worst fuel efficiency and finally engine fault.
