How much blow by is normal with 187,000 miles?? Got a steady cloud out the breather tube but the engine cranks real well and seems to have good compression.

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2003 Ford Crew Cab 6.0 Powerstroke Diesel 6 spd 4x4(For Sale)

1981 MB 300SD 190,000 miles Gray with cream interior.(sold)
1981 MB 300SD 239,000 miles Cream with Brown interior.(sold)