Just ran mine two hours with no oil. OOPS. Was empty when I got it used and it just slipped my mine. I looked at the glass in the pouring rain and it looked half full so I ran it. When I disconnected hoses I noticed it was really hot and smoke coming from the hoses. Put oil in it the next day and it seems to be running OK. Will have to keep an eye on it. Good pump.
You need to put the phone down and get back to work!