high iron in oil sample

You need to find and fix the coolant leak. Very bad on the motor .

 

And I would take valve cover off and look at all the valve train parts closely. That's all iron up there.

 

what is the viscosity number, add some lucas for now, the sodium and potassium is antifreeze, what engine? could be oil cooler? also could be air compressor wearing out.

 

He has a 60 series.

 

He is correct. I've had oil cooler go south. It puts oil in the coolant, a very noticeable amount. It will start to blow out on your engine as well from around the turbo area when the oil cooler goes.

Do you have an EGR cooler? You might have tiny crack in a head gasket as well.

 

If your oil cooler would be bad, you would see some oil in coolant reservour. But if there coolant in the oil-thats internal engine problem. Your sample shows about 76ppm potassium(if you have more than 50ppm in sample you risk to ger corrosion on engine components). You getting lead because coolant makes corrosion engine bearing surfaces(mains, rods, cam bushings). I would take the valve cover off and check if there is no green/white sludge on it. You would need to pressure test coolant and leave overnight(drop pan and look where it leaks). Also 42ppm of iron is high on 11k mile change. It should be about 10ppm. I would inspect main bearings. How many miles you have on the engine?