AFE Power - Blade Runner - Radiator - Biggest Best 6.0 Liter FORD Diesel Truck Cooling Available

None I guess. Other than they blow.  Figuratively and literally. 
Or more accurately, one should heed any warnings about these engines and not presume any sort of reliability. 
I wish Jeff the best of luck with this but it’s already been a money pit and now may have a blown hg or cracked head?  The coolant puking at a low temperature is a likely symptom.