looks like blow by but tech says its steam

[pingpong1984]

(12-08-2018 )Waterloo Wrote:  Are you getting excess pressure in the coolant? Is it pushing coolant past the radiator cap? If you have a NAPA near by, run up there and get an Engine Block Test Kit, runs around $50, most all NAPA stores stock them. Run the test, it may take a few minutes, make sure the engine is up to temp, get the temp up there before testing.

no excess pressure in the coolant. and no coolant pushing out of reservoir had it tested today everything seems to be normal except for the smoke/steam coming out of the oil fill cap. the tech at the international dealership said that it was moisture that got into the system from the egr cooler leaking told me to get a load on the truck and the smoke/steam will disipate. after reading different post and forms all weekend it just dose'nt make mush sense