An oil analysis might be a good idea. Blackstone Labs seems to be popular with car guys and gals. Ideally you have your oil analyzed over a long period of time each time you do an oil change. That way, when something starts crapping out inside your engine, you have a better chance to diagnose what it might be. Nevertheless, a single analysis can tell you a lot. For example, you should be able to detect bearing metal if your bearings are going bad. Anyhow it's not too expensive and might help you decide on what to do next.Just got my oil changed in 2013 500c - mechanic said that he noticed silver specs in old oil and I should be worried. I have not noticed anything unusual prior to this. What should my next step be?