Turbine Doc
Just Another Diesel Guy
I didn't realize it happened over time so yeah, I agree its not a squirter issue but unless they reused the pump, I'd be leaning towards a bearing issue.
I'm concerned about them as well but hoping it's a pump issue, Wrecker & I recomended he crank it up, warm it up & pull an oil sample, if it's bearings, there will be metal in the oil, possibly we will be going by his place this weekend pulling pan & main/rod bearing caps and know for sure.