The mustang has CATS, so the extra zinc may pose a problem. I think they have a special oil for cars with CATS. What is a good break in protocol i.e. oil changes and rpms..speed, start stop,etc...to break in a new engine. The 5.0 is stock and I want it to run another 160K+ without any problems. The person who rebuilt the engine said it looked really good for the miles it had, hardly any wear. Probably could have got 250K+ more...
Thanks,
Paul