Hey blue smoke is not good sign!! Blue smoke is usually caused by lube oil getting involved in the combustion process. Some possible causes are turbocharger seals failure, pullover of lube oil from oil bath air cleaner sump, worn valve guides, piston ring failure, glazed cylinder liners, high oil sump levels. excessive big end bearing oil throwoff, low-grade fuel, fuel contaminated with auto trans flu, or engine lube placed in fuel tanks as an additive!! Just some info I pulled out of a book from school. Hope this helps, I'll see if I can find some more dirt.
DAMN power strokes!!
It's is pretty common in fords for turbo seals, and turbo oil lines to go bad, especially if you have programmer. Also could be sign of rings bc if oil is getting to glow plugs must have alot of oil pressure!! What is oil pressure gauge look like and check your air cleaner for oil blow-by!!