I finally received the filters for the generator . Replaced fuel, air and oil filers and changed the oil.
As long as the engine is running, the generator runs with 3 ACs on - improvement.
Turned the engine off and was otherwise occupied for 45 minutes. Returned to find the generator off.
Restarted and 3 ACs came online and in a few minutes, the generator stopped.
Restarted again immediately and began watching the diag screen.
The generator ran with 3 ACs: ~1800 RPM, 30-43% load, and the temp was 205. Watched the temp climb slowly to 239 (roughly 15 minutes). At this point I shutdown the generator.
I also noticed that fuel is nearing 1/4 tank. I will fill up and retest.
What is the normal operating temperature for ~96* OAT?