[howard freeman]

The best way to check for failing IMS bearing is to take oil samples and send them off for testing and cut the oil filter element open & spread it out looking for metal particles. You should also remove the oil sump plate after draining the oil & look for metal filings in the remaining oil on the plate. You must also look for bits of plastic in the filter media & in the sump plate. This indicates chain rail wear & will cause cam deviation issues. Last but not least, when the sump plate is removed look up inside the pickup tube at the screen for debris. Most important is quit using Mobil one in these cars. Motul 8100Xcess or Jake Gibbs oil only & 5000 mile max intervals.
Howard