Dave this is how i knew:
Bought my car in private sale in Perth August 02 with 75,000Kms on clock
3 months later it was going in to have its timing belts changed so i decided that while i was bored in peak hour traffic i would pull off the old Castrol service sticker which looked like it was blank.
After i pulled it off i shined it in the light and u could see an imprint of what it used to say - next service Aug 02 or at 104,000Kms. Why someone wind them back in perth i dont know - maybe it was orignally bought from some dodgy import dealer in perth because theres rumours that some do that.
Anyway i have a bit of an accurate knowledge now of what the cars actually done.