Any Detroit diesel guys here?

DO NOT do anything that is not in your job description, it can come back to bite you in the ***. Document in writing anything you do as far as YOUR maintenance goes, as well as document any & all correspondence you have about things malfunctioning. If you have all of your documentation & something happens because your suggestions were ignored, your *** is covered. In todays world, stuff slides down hill & upper management tries to distance themselves from the liabilities. In other words, CYA the best way you can.