intermitten puking on long open highway trips

[SixOhLariat]

Since this is my first post, let me start by saying hello everyone! I hope somebody can point me in the right direction. Here is my issue. I have a 2007 6.0, ARP studs, Ford gaskets, heads were flattened and deck was good, Sinister EGR delete, 155cc Innovative injectors, Innovative street tune, and innovative moderate Ficm flash. When studs were done the coolant system was flushed and oil cooler replaced. All work and mods were done to truck late summer 2012. The truck runs like a raped date! Only issue I am having with it is the degas bottle intermittently pukes. Its not horrible but enough to leave white residue around the top of the degas bottle and some on the air filter housing. It only seems to do it when on long open highway trips. I run from Baltimore MD to Greensboro NC at least three times a month no load, no trailer and that is always when it does it. I can take it out on the road and beat the hell out of this thing and it wont puke! Data logged my deltas tonight. The hottest I could get was ECT-190 and EOT-193. The highest differential between the two I saw was 6 degrees. This is driving me nuts! I figured if it were a bad fan clutch or water pump my coolant temps would be much higher. The truck does have fresh ford gold in it. I plan to flush with restore and restore plus in the very near future and refill with Rotella ELC. Any ideas???? Thanks!

BTW... I have put two new degas caps on it since summer and coolant is filled to min line on degas bottle.

[T diesel]

I'd check for exhaust gasses in the coolant.

[southend]

If you have 6° deltas you are better off not using chemicals to flush. Imo. Your coolant level cold should be at the min mark cold. Make sure it's not overfull.

Sent from my phone that somebody didn't help me get.

[SixOhLariat]

what is involved in checking for exhaust gasses in the coolant? Test strips? As far as a visual inspection....the coolant looks brand new and smells only of coolant.

[T diesel]

Something like this..... UVIEW COMBUSTION BLOCK LEAK TEST FOR GAS & DIESEL - Tools - Mechanics & Auto Tools - Automotive Specialty Tools