(X Reg / 1.8 Ecotec) On the front of the engine adjacent the Cat' is an aluminium casting with the name of a filter manufacturer (Hengst) on it, on the end is a 24mm hexagon. I assume is the oil filter casing into which I pop a new element - or does it come complete? i.e. like my old J reg escort. While changing the oil & filter I'll replace the air filter (no problem locating that) and take a look at the plugs. Removing the plastic Ecotec cover exposes a distribution rail over the centre of the engine - presumably if I remove the Torx screws securing the rail it gives me access to the plugs. Can anyone confirm if my assumptions are correct?