High sodium in oil

[simon999]

Actually I did couple times oil samples at speedco and they are close to the other labs. You can resample with polaris or blackstone to make sure. This sample shows coolant in the oil. Its not critical, but cummins says if its more than 50ppm in can start to cause bearings corrosion. You should notice if you losing some coolant Pressure test your coolant, egr cooler. Might be many things like air compressor head, cylinder head, head gasket, dropped liners.. When I had this problem was oil cooler gasket between engine block and oil cooler housing mixing oil and coolant.