Had my s3 for a week now, and I'm starting to get to grips with it, but I'm confused by the variable servicing . On the DIS, if I go through the menus to 'check' then 'service' there are two options, one is 'oil change', and the other other is 'service'. For the oil change it says it is due is 8500miles or 358 days, for the service it says it is due in 18500 miles or 1000odd days. If I pull the right hand knob it says oil change in 8500miles or 358 days and then after a couple of seconds says service due in 18500 or 1000odd days. So whats this oil change business and whats the service thing? I've read the manual and I'm none the wiser, it says you can go for fixed interval servicing or variable servicing, but my car seems to be giving info for both.