Last summer, we were pumping water into a new pond to stock with fish. We tried to keep the pump going around the clock even if someone had to go out at midnights to refuel the pump. The second morning, when we went out to fuel the pump and check the oil, there was no oil. A black spot on the ground showed us that an oil line had broken and all the oil was on the ground and none in the crankcase. But the engine was still running!
Bill J.