DD13 code Spn 6259 fmi 0, anyone have experience with this?

Coolant doesn't just evaporate. It's going somewhere. If your Delta-P is getting wet you probably have a leaking EGR cooler. Do you get pressure in the coolant reservoir? Have you pulled the crossover pipe off and checked for liquid in the intake yet?

You probably won't be able to see evidence of coolant in the oil if you have a small EGR leak. The coolant leaks from the EGR cooler into the intake, gets turned to steam, then gets expelled in the exhaust. You may see elevated sodium and potassium levels in an oil analysis because some chemicals mix with the oil on the cylinder walls instead of turning to steam.

 

Air intake. The metal pipe between the Delta-P venturi and the air intake is the crossover pipe. If you take it out you should see evidence of a coolant leak if there is one. Also look down into the intake where the crossover pipe connects. There should never be any liquid in there.

 

How do I do a force clean?

 

Ok every one. I got to the butter fly in the egg and it moved freely. I will need new batteries for the flaslight to see if there is liquid in the p egr tube. Or if it's just wets.
Attached is a picture of the coolant. Let me know if you think its doscolored.
It is low. But only long enough to get this picture. And let it cool down.

 

Has anyone heard of "updating" the mcm?