My recently purchased Astra 1.9 cdti 150 is going in for a service in a few days. It's an 07 plate and covered 65,000 miles. Last service was just under a year ago at 54,000 miles. Going to tell the garage to give everything a once over to check for any problems and clean the EGR valve out as well as all the usual servicing bits (changing oil, filters etc...), Just wondered if there is anything else I should get done while they've got my car? What about the cambelt, when should I be getting this changed? Anything else you can think of would be most helpful!