Power Stroke 7.3 Liter Diesel Engine Low Pressure Oil Flow High-pressure oil pump reservoirCylinder blockAnti-drain check ball capO-ring sealSpringCheck ballValve lifter oil galleriesPiston cooling oil jetTurbocharger oil return galleryTurbocharger oil supply galleryPressure relief/regulator valveOil filter bypass drainMain oil galleryOil coolerOil cooler headerOil pump … [Read more...] about Lubrication System : Low Pressure