[IndyDiesel]

Current mileage is 37,500 and doing some research the do test for , tbn and tan not sure its not listed. if oil analysis is done and there are records how can they say its lack of maintenance. If using a high quality oil there should be no worries. I know this is a different beast than my 7.3l Powerstroke but been sampling oil for 7 years now at 10000 to 12000 mile oil changes with no problems.

I really doubt Chevy gives a hoot about an oil analysis all that does is document you exceeded the gm recommendations. The power stroke has a huge oil capacity vs this modest oil capacity. Just my thoughts.