Hi I have a 2005 w211 e330cdi. I've just had it serviced yet by a specialist at 80000 miles. The last service was just 9500 miles ago and the next service is indicated for another 9500. This seems a little low considering I do drive very carefully, even if it involves a bit of town driving. Is it possible for the garage to over ride and set the next service? Similarly, I've read that the type of oil used can be set in the system and influence the next service? Mercedes 229.51 fully synth was used but not sure if this has been set. Hope that lot makes sense!