Thanks for the reply Richard.
So, twenty minutes for an oil change then half an hour of buggering about on a website thats has some sort of a problem.Who pays for that then?
I was really hoping for a much bigger response from everyone to this query, but maybe its just not technical enough?
I carried out my own straw poll by ringing 5 mates in the trade and NONE of them bother with it - even if the car is still in warranty! I guess that means - thankfully I'll do the same.
Cheers

Colin.