Numbers don't look too bad. Hey, its not a Toyota. And, the numbers are relatively consistent.
Looks like there is enough TBN to go the 15k mile OCI. But, viscosity issues, along with nitration/oxidation, might be something to worry about.
Hows the oil consumption?
I vote for series 3000.
Is there room for the FL1a/PH8a/51515 sized oil filter. Maybe all you need to hit 15k is the increase in filter size and filtration, along with the few extra ounces of oil capacity?
Looks like there is enough TBN to go the 15k mile OCI. But, viscosity issues, along with nitration/oxidation, might be something to worry about.
Hows the oil consumption?
I vote for series 3000.
Is there room for the FL1a/PH8a/51515 sized oil filter. Maybe all you need to hit 15k is the increase in filter size and filtration, along with the few extra ounces of oil capacity?