not a mustang...but the expler forums don't have enough traffic, and it's the same engine, so hopefully you guys can offer some insight:

So to recap my recent problems with my 4.6:

Noticed an occasional 6th cylinder misfire code, very random, and not often.

Figured I'd get new plugs as part of my new ownership maintenance. Also noticed I was using up oil at a higher than what seemed normal rate - I check it all the time, just a habit.

Fast forward to this weekend, I popped off the...

4.6 considerable oil consumption