Well yesterday I got a a screaming deal on a 2006 outty with 4780 miles on it. FREE! Well anyway, the previous owener gave it to me since it supposedly needed a motor. Put a battery in it started it up and drove it around. About 10 mins into driving it engine light came on for low oil. Stopped it immediately, pushed it to my garage and checked the oil, which was fine. Pulled the oil sensor and tested the pressure after it cooled off, it was between 25-30 at idle and up to 50 at 3/4 throttle at idle. started to drive again and after another 5 mins light came on. Checked pressure again and it was at 0 going to 10 at full rev. Put new sensor in and did nothing. Motor makes no noises and no metal in oil. Pulled pto side cover to see if the teeth were stripped and they were not. Could the regulator spring have broken and cause this? Or is the oil pump bad?