I got my truck back today and its running great. The tech pressure test the heads to verify they were not blown. Said it tested good and the famous words "You should'nt have anymore trouble." We all know what that means.
This is my first post. I just wanted to say its a good thing I read this post. I noticed black and white smoke a couple weeks ago when taking off from a complete stop. I called my service tech at Ford who said its most likely a high level of sulfar in the fuel. I drove of the remaining fuel...