My Nono told me years ago "if you have enough money you can make Niagara Falls run backwards." It a tough decision to dump a vehicle past its best before date. My 2011 Silverado is creeping towards 200 ,000 KM's, so far so good except the thing is starting to rust, badly. They only want 75K to replace it!!! As far as dialing back an odometer I always look at the rubber on the pedals, a vehicle with 60,000 KM's isn't worn on the right side of the bake pedal, some guys I knew would actually replace the rubber. If they look new, walk away, if the are worn walk away. Good luck.