Maxxforce 13 Oil in coolant, no oil pressure

So on a scale of 1 to 10, how bad is the egr cooler replacement about to be for me? lol @Heavyd

 

I totally understand. Now I’m not gonna pretend I work on diesel trucks everyday, but in a past life (like 8 years ago), I went to a GM ASE school, and then worked at a dealership for 3 years as a tech so I do have some technician background, but all on gas domestic, no heavy-duty diesel work. I don’t have much to lose cause the trucks been sitting for months and I don’t have the resources to pay someone to do it right now. So I’ll prolly gather some helpers and give it a shot. I’ve watched a couple videos and it does look like a pretty bad job. Is it absolutely necessary to take the dash out? Thanks for all your help sir, it’s much appreciated. @Heavyd

 

So after a couple weeks I’ve managed to get the high temp cooler out. Is there anything I should look at/replace while I’m in here? @Heavyd

 

Thanks for the info! Could you give me the rough location of the doser injector? @Heavyd

 

So this picture I’m posting is of inside the cooler housing where the two coolers meet, you can see the fins on the bottom, but on top it’s clogged with junk. What is that from? Does this mean I should replace the low temp cooler as well? You can’t imagine how much help you have been. Thank you very much. @Heavyd