2017 x15 Coolant system pressure test. Not losing pressure after 20 minutes ??

[BrandonOlsen]

Did the test again and no leaks. I did replace the charge air cooler and unloaded valve that was all plugged up and seems my problems have all faded away. Seems to me the charge air cooler can do some odd things. So as of now truck is running good. Don’t see any sort of smoke and turbo isn’t surging at idle anymore