I picked up a Honda em5000 generator from Craigslist for$30. Its the same as the picture below except the frame on this one is all rusted and extremely beat up aka it looks like a tree fell on it. Anyway I bought it because the engine turned over and the engine and generator portion all look surprisingly good. I'll have to basically rebuild the frame the generator sits in but that's ok. For now I just need to see if the generator runs and generates power. I don't have any manuals or any other info on what oil to use. What should I use? I have a ton of shell rotella 10w30 semi synthetic I bought on clearance from AutoZone a while back. Is that ok. Should I run a 40wt?. Should I use a single grade oil ie sae30 or is multi grade ok? Picture below is not my generator. Pretend this one went through mad Max and there you have it.

