Originally Posted by taskforcefreddy
Usually bad things bud. Could be head gaskets or a bad EGR cooler which made have been caused by a clogged oil cooler. Do some searching on here and you will see the other indecators to looks for to help narrow down the culprit.
I agree. I had a bad EGR cooler. Built so much pressure that coolant was comin out of the bottle some. Got an EGR delete a couple weeks ago, problem solved. Another thing is, turn off your radio, roll windows up, get up to like 75 mph, and then let off the gas, you will probably hear a tea kettle sound. EGR delete shouild fix this too.
You could have blown your gaskets too. If you cooler is bad, replace immediately. If you dont, you can blow your headgaskets. At that point in time, you have a very expensive couple of fixes. Dont wait.