Personally, I think 200 miles is way too early for an oil change. 3000 miles sounds about right to me, 1000 anyway.
In your first post you mention filtration conditioning for your cooling system. If you mean as a way of avoiding cavitation corrosion, the Cummins doesn't have this problem.
In your first post you mention filtration conditioning for your cooling system. If you mean as a way of avoiding cavitation corrosion, the Cummins doesn't have this problem.