I guess I would have disagreed with the High Mileage oil from the begining. To me a High Mileage oil should only be used (regardless of mileage) when an issue actually appears then use it to see if cna help the problem. A prophylactic use of High Mileage to me does not make sense.
Other than that I agree that you may be over thinking this. As to filters, well my opinion is that they are pretty much useless so go with a quality filter and don't worry about it.
Other than that I agree that you may be over thinking this. As to filters, well my opinion is that they are pretty much useless so go with a quality filter and don't worry about it.