Harbor Freight Predator generator 420cc 5500 running watts 13hp.
Out was a mix of M1 TDT 5w40 and Mobil SS 5w30. I figure that oil was in it about 15 months. Only had to use the generator twice for actual power outages (several hours each) but run it every month for at least 30 minutes with about 2500 watts on it. Oil changes on this are super simple and quick, only takes like 33oz and 5 minutes.
In: About a 50/50 mix of M1 5w30 HM and M1 10w40 4T. This is what I had sitting around as partial quarts and sounded good.
Out was a mix of M1 TDT 5w40 and Mobil SS 5w30. I figure that oil was in it about 15 months. Only had to use the generator twice for actual power outages (several hours each) but run it every month for at least 30 minutes with about 2500 watts on it. Oil changes on this are super simple and quick, only takes like 33oz and 5 minutes.
In: About a 50/50 mix of M1 5w30 HM and M1 10w40 4T. This is what I had sitting around as partial quarts and sounded good.