Maybe you should send out a tech bulletin because I talked to several service techs ( at different dealerships) and they all agreed. I am not saying you are wrong but this information should get to the service people at Ford dealers. BTW mine only has < 800 miles on it, if that would matter.

 

5800 miles no smoke. never, no black pipes.

 

thanks senix, your a great example of a properly functioning truck! just like mine (knock on wood) 16,000 miles and my pipes are squeaky clean! never smoked, no white, black.. nothin!