Originally Posted By: rokwldr
I have a North Star 10,500w generator with a Honda GX620 and it has an oil pump (for who ever said they don't). I ran it 20 hrs and changed the oil like it said and I am using NAPA Universal Fleet 15-40 with no problems. The second time I tried to start id it wouldn't fire, Disconnected the oil switch and ran fine. The Honda guy said these have this trouble a lot. It was used for about 40 hrs during Irma. I wired it direct to the panel just 2 days before the storm, it runs everything except the stove and water heater. I leave the breakers off for those. I will disconnect one leg on the water heater element next time, then it only uses 110V but draws less amps and takes longer to heat but not loading the generator.
I may be wrong, but in many OPE engines that have a pump, only pumps the oil through the oil filter, but the engine is still splash lubed.