All oil lines are hard plumbedCrank case breather line is hard plumbedRelief valves are plumbed to a manifoldFive StagesRadial layout for reduced vibration and crank shaft loadingSpin- on Type Oil FilterConnecting rods with needle roller bearingsStainless steel valve assemblies on all stagesLatest technology in valve and ring designRelief Valves on 1st, 2nd, 3rd & 4th StageIntercoolers on 1st, 2nd, 3rd & 4th, after cooler on 5th stagePressurized oil lubrication systemCast Iron Block and CylindersDesigned and built in the USAWater separators on 2nd, 3rd & 4th stagesOil pressurized crankshaft main rod journal, CN440-CN475