i need some advice . i picked up the truck a couple months ago the week after i got it was back to the shop to get the egr cooler and oil cooler changed. it was blowing coolant out of the degas bottle. the truck had 47k on it . after having that work done its still blowing coolant out and the shop said it needed a new cap so it has a new one the same thing. it has 51k on it after a few months now it seems to do it after i drive for along period of time or after running up a grade. the guys at the ford dealer said it all checked out wasn't a motor issue. the truck doesn't seem to have the power it should either my buddy drove them all the time when he work at the dealership and he said it felt a little underpowered . any ideas what would be causing it to still be blowing coolant out of the cap after the work that's been done

 

best thing for you to do is post this in the 6.0 forum if you haven't already those guys there know their stuff about 6.0s best of luck