How often to change oil in unused portable generator?

My father in law has one of the HF inverter generators. Once, while I was there, I heard it running and went out to see what he was doing. He was running the gen. He told me once a month for thirty minutes. He had it running unloaded so I looked around and spotted an electric heater. I plugged it in and the gen immediately picked up the load and started running smoother. I said there ya go. Do it like that from now on.
Also, my brother is the area rep for Briggs and Stratton generators. He received a bulletin from them a few years back that Mobil ! is considered a lifetime oil in their engines from that point forward. They instructed him to change the filter and top off the oil. Full change is not necessary.
I don't know if this includes portables, I can find out if anyone is interested.
 
I was thinking about this thread yesterday since I pulled out my old Briggs brand pressure washer to clean my house.
I've had this machine a good 20 years and it runs a couple hours a year..
I betya I have changed the oil in it twice.
Stuff looks clean to me.. after all this time..
 
Back
Top