It wasnt biofue. We get loads of trucks in with contaminated fuel they have to be drained but another landy driver in my work runs the contaminated fuel so i started doing it cause its free derv... got 5 full tanks free... filled it a 6th time and my injector pump is now ####ed... sent it and the injectors off to be refurbed so it will probably end up costing the same as diesel from a garage