I'll have a new/dry big oil cooler, remote oil filter, & lines all dry. So it probably works out well to spin it w/ GP's out both the purge air from the injector lines as well as purge the oil lines/cooler, etc.
Then can top up the oil, install the GP's, & fire it up.
1995 K2500, 8600 GVWR, 6.5TD, NV4500, 3.73:1, 18:1, balanced, Fluidampr, DSG timing gears, '97 cooling upgrades, 2100 psi-pop injectors, 4" exhaust, ceramic coated exh manifolds/turbine housing/SS crossover pipe, Autometer: pyrometer, boost, oil temp, oil press, fuel press, & water temp gauges, remote oil filter, B&M plate-style oil cooler w/ braided SS oil lines