Sounds like you've done some research and I concur. I can't speak from experience, but from what I've gathered it occurs usually when oil levels drop low. So, in your case, I don't know what it could be.
Just run it and keep checking the oil. If worse comes to worse (knock on wood), you really don't have choice but to do
something about it, as there is really nothing to prevent it. Best of luck, hopefully there's more input.