I just got my bulletproof diesel bubble tester in the mail and went out and hooked it up... no bubbles.. at all. Unplugged the turbo harness.. no bubbles still. What gives?! Any help is much appreciated as I was told by a mechanic I need head gaskets. Thanks in advance guys.

Jeff

 

What is wrong with your truck? Why u think head gaskets?

 

Losing 1/2" of coolant out of degas bottle a month. N I have brown gunk in degas bottle also

 

I would check compression thru glow plugs. Usually the oil cooler is a bigger issue than head gaskets when there is oil in degas bottle. If compression good I would suspect oil cooler as source of problem.