My whoosh setup is just getting into its 800 mile or so I’m running 5w-30, it’s only smoked twice on me after sitting at idle in the heat for extended period of time. I honestly haven’t a clue this is my first big turbo car and blood type racing did the install. I’m pretty sure after talking to Ron it’s not any turbo seals but he does want me to change too 5w-30 amsoil full synthetic. Is this a common problem with these Ecoboost cars with catless DPs, I’ve seen similar threads posted on focus st forums