My lb7 made 296k before making oil.
40k on this set and still going.
But did have trans/t case at 200k and front end complete at 335k.
Will say the 10psi lost in oil pressure, this is prolly the cleanest diesel oil you will see. 5k and still clean.
I've rebuilt the trans with a stage 5 PPE kit and triple disk converter, fixed the transfer case with an aluminum pump housing and welded the holes shut that the previous owner had glued at around 190k when the trans went into limp mode pulling a boat. At that time I also rebuilt, ported and installed a Wetzel wheel in the turbo. I recently took off the PPE bleed valve and installed a BD waste gate actuator and PPE stainless downpipe, I should have done that when I did everything else but I tried to save a little money after the cost of the trans parts.
My oil always comes out really clean for a diesel, but it's starting to loose a little coolant once in a while and I see more carbon in the reservoir than I'd like. I suspect it lifts the head slightly when I hit 32 lbs of boost. Before the downpipe the EGT's could get wild in a hurry, now they only get semi uncomfortable. I probably should have done head studs along the way but I didn't want to spend $600 on studs.
I've also put half shafts, front wheel bearings, two sets of upper ball joints, lower ball joints, inner tie rods twice, outer tie rods, 2 idler arms, gearbox, steering mid shaft, steering column lower bushing, pitman arm, rear brakes twice, front brake once, new brake flex lines, rear brake hard lines, and 3 sets of tires in the 60k maybe 70k I've owned it.