oil dilution with diesel

[wrench buster]

Hi Tree, I have done the EGR tune up, cleaned the intake sensor, The rail leak down test passed. I also pressure checked the CAC, I saw no EX. leakage. From what I've read the frequent regens could be causing the oil dilution since fuel is injected in the cylinders to accomplish re-gens. Let me know what you have found out to make this happen in your cases. Thanks for your quick response.