Just paid £700+ on a new turbo on my 1.6 TDCI 56'reg 44,000miles.

I was told I could have avoided the problem if I change the oil every 6 months rather than 12 and no excessive revving -which I didnt think I did. He also muttered it was a problem with the Focus models. Pity he never told me that on previous services :(

Anyway, I am uncertain of what parts I should keep and eye out for, to catch the problem before something major happens.

Could you guys give me a checklist on parts most likely to replace and the time between changes.
Eg. Timing/cam belt, disc brakes, filters, fluid replacement (rather than topup) etc...