[Norretal]

Originally Posted by Burnzybubbles

Pretty sure it won't clean your swirl flaps, not unless they are in the exhaust side, not familiar with the s8 engine, but terra clean is a petrol additive and as such won't touch anything the petrol doesn't, and as your engine is direct injection, all it will clean is the combustion chamber and maybe parts of the exhaust

Pretty much summed up what I said but in a much better style, cheers