Just wanted to c if everyone thinks its the oil pump. Was driving home and out no where oil pressure dropped to zero. Pulled over shut it off checked oil, coolant and all. Started truck back up began driving. mile down the road same thing happened. If i shut it off and restarted it the oil pressue would go up and truck would sound fine then it would just drop again and truck made noises so i had to keep restarting it the whole way home. Oil level was fine when i checked it. Some said possibly a spun bearing but i was told the motor was rebuilt so i dont. Just want opinions