Dodge D250 1990 Service Manual page 398

Exhaust System and Intake Manifold
DODGE Turbo Diesel
Air System
Page 11-17
Caution: New turbochargers must be prelubricated with
clean engine lubricating oil before start up.
Pour 50 to 60cc [2 to 3 ounces] of oil into supply fitting.
Note: Rotate the turbine wheel to allow oil to enter the
turbocharger.
5/8 inch
Install the oil supply line.
Torque Value: 15 N-m [11 ft-lbs]
After installing the air intake and exhaust piping, operate the
engine to check for leaks.