[77newell]

While I can't predict what your oil is capable of, my experience suggests your oil is likely to OK. The only way to know for sure with your particular engine and choice of oil is to take an oil sample and have it analyzed including the extra test for TBN. If TBN gets too low engine corrosion will occur.

Diesel engines tend to have large oil reservoirs, oil changes are not cheap so it makes all the more sense to have the oil analyzed.