Ok. I get it. We just bought our first Class A. Have had it parked at the house cleaning and setting it up for first trial. So have been running the generator a lot for air-conditioning while we get in there to clean and I can get more familiar with all the buttons and switches. So we probably have put 50 or 60 hours on the gen set this week. No hookups here at the house.
Oil and filters are cheap compared to a new generator. I will probably change the oil after this first little trip so I can keep track of the hours accurately.