Hi everyone, this is my first time on this Forum so please bear with me. I have a 2005 D-4D XT-R 3Dr with 65k on the clock. Just recently I have noticed excessive vibration and some loss of power when accelerating in 4th and 5th gear especially when on anything resembling a hill. The vibration / chatter whatever you want to call it seems to be coming from behind me and I'm sure it has always done this but seems worse just lately. Toyota suggested a good fuel system cleaner and I have just ordered Archoil AR6400D-Max. Any help with analysis or experience of the fuel cleaner would be much appreciated as otherwise its been a good car!