I have an issue with my truck, wondering if anyone can provide some insight. Driving it across the country last week I puked a good amount of coolant (i probably put back in over a gallon when it was all said and done) and also at the same time I discovered a crack in an expansion joint on my turbo y-pipe. Right before it puked I was driving roughly 70mph in the hills of South Dakota against a 50mph headwind, which I obviously didn't realize were that strong at the time. Since I filled the degauss bottle up to the correct level, I have not lost any coolant. It has stayed at the same level for basically the last week. However, each morning when I start it up cold it blows some white smoke. One morning it was very heavy billowing out for a couple minutes and the other mornings it is just barely even noticable. Truck drives fine and has good power, the crack in y-pipe causes a whistle around 20+ psi of boost but other than that it seems perfectly fine while driving it. No coolant is being lost, oil looks good and is staying steady also. I have an egr delete so its not a bad egr cooler.
Does anyone have any ideas of what is causing this??? maybe a very very slight amount of oil or coolant that is leaking down there as it sits all night but is not noticeable to the naked eye when I check the level? Thanks in advance.