Thanks for telling me that you got it done. National tyres do oil and filter change(unipart filter)fully synthetic castrol edge 5w40about £58 online order. if you get original filter from dealer it's £21 but national will charge you less because they won't charge for the filter, just go direct to them, not online. air filter £14 easy to change yourself, 4 screws easily accessible, if you have a diesel, my filter had plenty of crud in it at only 16000 miles, again get main dealer part about £18 and get it changed, fiddly but not too hard, again national can do it.