Just had car serviced at 40,000 miles. Last service was at 25,000 miles. Am using Castrol Syntec Oil. I am the original owner and the car is used as a commuter with most of the mileage being highway miles. Car runs great except for some minor issues. Shop cut open oil filter and found some small silver metallic type particles. They dropped the pan and said the oil and pan looked free of metal. Any recommendations on who I can send the metal fragments and oil to for analysis? I'd like someone to give me a good guess where they are coming from?
The shop thinks its the IMS bearing going.