Your comment that you will soon boondock prompted me to write this. We have a 2011 Sunseeker 3100 with the Onan generator.
For your information, Onan recommends breaking it in by running it at half load for two hours then 3/4 load for two more hours. If you haven't already, read the Onan owner's manual. It has lots of good information. You can download it from their web site. That's handy if you leave the manuals in the coach when it is in storage like I do.
Here's a tip for Sunseeker owners (may also work for other brands and/or Class A's) that you won't find any of the literature that came with your coach: The coach batteries supply the power to start the generator. If you are dry camping and run the coach batteries down, you can't start the generator to recharge them and to run the furnace, etc. However, if you start the chassis engine, the battery control center will connect the chassis battery to the coach's 12 volt system and you can then start the generator. Don't do like I did and forget to switch the chassis engine off! You can't hear it running with the generator running.