Oil consumption with 6.6 turbo Duramax??

Use Rotella in mine, never a sign it is using any oil. One point I would make, with that few miles on it and tapping the throttle every so often, have you hooked up to a really good load and done some pulling. It may be the engine just isn't broken in yet. When mine was new, the first few times I pulled heavy you would find some oil on the trailer, after that none was visible. Just a thought.