I took my 2011 with 25k to the dealer bc I saw smoke coming from my motor just under the passenger side firewall. It looks like its coming from the bottom corner near the valve cover closet to the firewall. They called me this morning to say they can't find the source of the leak. They said they saw oil on the the heat shield and header flange but no leak? They told me the pre vehicle inspection when I bought it 1 month ago could have spilled something there and it's burning off?
This video was from Saturday and the only thing I can think of is, I checked the trans fluid level on Friday. Maybe some dripped off the end of dipstick onto the heat shield and slowly dripped onto the header causing the smoke? I drove 300 miles and parked for a few hours on Saturday. Drove out to eat, then played a round of golf. When I started it up is when to smoking appeared after idling a few minutes.
I'm going there in a few hours to pick it up after they inspect my sunshade rattle and a little bewildered they didn't find anything leaking. So I'm hoping it was something that dripped off the trans dipstick.
5.7 Smoking - YouTube