Looks pretty good to me. I have heard good and bad things about the C15. But that's from truck drivers. For our use there might be less bad? The complaints I've heard were about the twin turbo setup.
I've heard lots of good things about the Ultrashift 2 pedal 12 speeds. I think that might be the trans in this truck. My son used to drive for a company that had straight 10's in all their trucks, fully manual 10 speeds. They got a couple Ultrashifts in and they mechanics didn't care for them. Said they had too many issues with u-joints. Shop manager thinks they were leaving them in gear and just putting on the parking brake. Is that possible? I haven't heard any major problems with all the guys that have them on the HDT forum.
My generator guy said Onan makes very good diesel generators. I don't talk to him too much because he's very busy so I'm not going to call him to ask about this one. Pretty low hours on yours. Start it up and make sure there are no error codes blinking on the panel light.
You might want to stop at a truck parts/repair place and pick up an oil analysis kit. They're only about $15-20. You get a small plastic bottle that you can put some engine oil from that C15 into (you're going to need a plastic tube and vacuum pump to draw some out of the fill tube, unless you're lucky and they have a drain valve on the pan. Send it in and you'll get a good printout of how the engine is doing. Or, if you take it someplace to have an inspection tell them to do the oil analysis there.
I wish I wasn't working this Saturday. I'd love to drive the 150 miles down there and look at it with you. Hope the roads are clear so you can get a nice drive in with it.
I've never seen a urinal in an rv before. Wow, kind of cool.
'03 Freightliner FL112, 295" wheel base, with '03 United Specialties 26' living quarters, single screw, Cat C12 430 h/p 1650 torque, Eaton 10speed , 3.42 rear axle ratio