I've been here about a year and it seems that engine failure is almost just a matter of time, or not if, but when. Is there a consensus on what is causing the spun bearings? I realize there are plenty of people who probably haven't experienced it and it's only when a failure occurs that people post it, but it sure seems to be prominent on here and 3ZC; as well as when seeing cars posted for sale that they have a new JDM engine or rebuild around the 100-150K mark.