5500 generator keeps shutting down after break in oil change

Thanks. Yea, caught that I used the wrong oil. Going to change it again today and see if that does the trick.

Owners manual calls for 15-40 or 30

Also, here's a quote from the manual,

Oil Filters
Green Label Parts oil filters feature valves that allow oil to bypass the oil filter
during cold starts, or if the filter becomes plugged. Other manufacturers’ oil filters
often do not have bypass valves. As these “will-fit” filters trap debris, oil pressure
starvation can occur, leading to high oil pressures, failed gaskets and even engine
damage. Other “will-fit” oil filters may contain a bypass valve, but it’s not possible
to determine at what PSI the valve opens. If the setting is too high, the filter’s paper
element can be damaged during a cold start rendering it useless, or cause oil
starvation to the engine.

I had it happen when trying to use 10-40 oil. Changed to 30 wt. and it is no longer an issue. Evidently cavitation was causing a low pressure reading.