I'm going to drop my GUIV MY05 DX auto with 300K on the clock into my mechanic in about 4 weeks time. I bought it a few weeks ago for 14K and it seems to go OK but runs a bit rough at idling. I'll get him to do all the oil changes (engine/transmission/diffs) and to check things over. Is there anything I should specifically ask him to look for? I hear all sorts of little noises I can't identify (apart from the tyres). They don't sound alarming and as I don't know the vehicle I might be able to assume that these are normal for a Patrol but who knows?