Was watching the new Wheeler Dealers last night with the Jag XK8. They featured a new engine cleaning system which you connect up to the fuel injection system, by passing your own fuel tank and pump. It then pumps highly purified fuel and cleaning solutions into the engine at high pressure, clearing all carbon, sludge etc. Its like a complete colonic irrigation for your engine. Far superior to any £20 tin of fuel system cleaner. Hydrocarbons went from 550 odd to 87 now thats got to be good. Anyone else see it? Anyone had it done?