John, I couldn't agree more, the 1600 Diesel was( in my opinion) one of the best tractors Oliver ever made. Ours is used as mainly a loader tractor now, but has been used for many things in the past. It was bought new in Spring of '63 by grandpa. Used as the main tractor doing all of our tillage on 310 acres. 1977 was replaced by a 2-135 White, and became secondary tractor, used for silo blower, corn planter, rock picker, haybine, and occasional field work.1980, complete overhaul at 8,900 hrs.  Used as a secondary tractor until about 1990. Put a loader on it in 1990, and it has had a loader on it ever since. Still gets used on rock picker, manure spreader and silo blower. Gets started every day of the year to feed all of our cattle hay. The diesel starts better than all of my other diesels, it is also amazing how little fuel it burns. Having nearly 16,000 hours in it, it is starting to show alot of wear. However it still starts excellent and uses not a drop of  oil. That engine just will not die! I have to say that this is one tractor i am proud of, and someday when it dies, if it ever does, it will get the restoration and long awaited retirement it deserves.