Alright, the reason why I'm posting this one is because all the engine knocking stories are for a 2005 and up with the Toyota engine. Since mine is a 2001, I have the S2 but with the rover engine and a 5 speed transmission. the engine is going threw oil (either burning it up or leaking). Then starts to knock, I but more oil in it then the knocking goes really down, but almost a whisper and barley hear it while Idling. Oily residue on the back bumper all way up too the tail lights, if that helps at all. But I can't find any oil spots on the ground when it sits for a while, I took a quick look at the engine (just got mine so still learning the car) but I'm not seeing any wet spots from the top. I would like to just fix it myself if its a quick fix so any help is many thanks!