Hello all well i've read up on the new cleaner Bio- Diesel which one of my local garages is now selling, so i put in my usual £20-00 worth and give it a go . The only thing the information letter advised me on is to possibly change the fuel filter as Bio-Diesel will remove the coating of varnish that is left behind in the fuel tank and fuel pipes by conventional diesel. Theres no difference at all in performance and fuel economy is the same , but i get more fuel so its more economical. Im running an aspirated 1.9 diesel engine with no turbo fitted. It is possible to run on pure Veg Oil but you need the engine converting inline fuel heater bigger pipes etc ,problem with Veg it doesnt like common rail diesel engines and certain fuel pumps dont like the viscosity of it. Ill keep you posted if any problems occur, hopefully they wont.