I have 1997 dodge cummins 3500 with 196xxx on it its realy low geard but when I get on the high way in 5th gear and do past 2000rpm its throws oil out the dip stickmy friend he is pretty smart on the 12v he said it could be a front main seal or egr vale the wast gate thing that goes along the block I need help if any one knows or had this problem the truck dosent have much blow by at all

 

could be producing boost pressure in crankcase .... bad turbo seals are possibly to blame