Just curious what everyone else does. I run three old Ford tractors; a 3000, 6600, and 9700. The past week I've had some downtime so I've been working them over pretty good trying to get 30+ year old tractors in as good a shape as possible for their age. I was curious what you all do for maintenance, preventative maintenance annually semi-annually or every couple years. Some do certain things a little differently. These don't get a ton of hours for use, just carting bales in the winter and bale up about 500 big bales in the summer.