paccar mx13 engine,, . 455 hp. Had 60lb oil pressure @ .1500 rpm going down road, In last 15 months has had new turbo & actuator, oil cooler & module, fan clutch, fuel filter module & lift pump with hoses, had new clutch 20k ago so flywheel was just turned. Oil changed every 15k never needed to add any between changes. , not out of a wrecked truck