Looking for some suggestions/guidance. Did some inspections as I am going to try and complete oil changes myself this year, feels like quite the undertaking for the first time. I noticed the starboard air filter and surrounding area as black particles. When that air filter was removed there was a bit of oil at the base of the filter and I noticed a part that seemed to be out of place vs the port side. Any trouble shooting suggestions would be great. Don't have great access to Cummins mechanics in this area. The starboard engine also burns slightly more fuel than the port. Could this contribute?