This is a thread about the oil pump gerotor bolts. They come loose over time and oil pressure is lost when they do. This leads eventually leads to engine failure if not some other internal anomaly. There are many theories as to why this happens but the main reason seems to be the different thermal expansion rates between the gerotor housing and steel gerotor when heated. This bolt anomaly is solved by putting Loctite blue on the bolt threads and reinstalling the bolts.