- Sample taken at OC.
- This oil was about half 5w-20 and half 5w-30, based on what I had on hand. All was Valvoline NG Maxlife. New fill is NextGen (not Maxlife) and all 5w-20.
- Filter used was a PureOne (not sure of the model number).
- It appears the TBN and viscosity definitely benefited from adding make-up oil at about the 9 month point.
- At this point, extending the OCI isn't really a priority as I drive so little I had a hard time putting 7500 mi on the car in a year.
As always, thoughts, comments, suggestions, etc are welcome.