Great to see others still running older well maintained machines like me.

I don't think the crops can tell the difference between going through a new combine or an older one.

My combine  is about 10 years newer a 1988 model. 

However I think I have you beat with my summer yard/ditch mowing  tractor. 60 years old this year and after a fresh overhaul/clutch last winter put about 140 hours on it this past summer. Otherwise it's pretty well original except for some newer add on parts.