Hi Waynne,
I've had two oil changes mate and used additives. It rattles like a bitch after a hard run down a motorway. You can here it going "clack-clack-clack" under the bonnet. I've also found that if it's stationary and i depress the clutch and release it again it changes, sometimes for the better and sometimes for the worse, when worse it get's really loud and sounds like a flamin' tractor for christ's sake! Ridiculous! I got quoted for basically changing all of them which is apparently 24 and would take apparently 5 hours at a cost of £570! I'm taking it down at lunchtime to check how many are actually screwed as i know next to nothing aobut the goings on under the bonnet. Anything i should mention to them to check?