A friend of mine was driving down the intersate when suddenly his 03 6.0L started surging very badly and a smell of coolant filled the cab. About 50 miles down the road the truck just died? Towed it back to town and got it in the shop and there is a coolant leak from what looks like the back of the passenger side head. Wondering if it can be a EGR cooler???? Got it to start for about 15 seconds once and it just pissed coolant out. I am believing the smell came from blow by from the degas bottle, possibly from the EGR cooler. But the oil does look a little light brown to me not black, but I know that coolant has a hard time getting into the oil with the compression on these motors. Yet there was not any coolant left to see any milky blow by through the cap on the degas. I could really use some help or thought on whether a head gasket or something with the EGR. Havent done compression test yet. Any thoughts help. Thank you.