I am looking at a boat with 3126 Cats. The broker mentioned the hours were higher on this one 2500 approx. I asked about maintenance records which he says are there but will verify when I go see the boat this weekend. Was posting here to get opinions on what services should have been done with this many hours? It got me thinking as I always see a lot of maintenance questions posted here but I never noticed anyone post up a maintenance schedule for these engines.