aha! we are having a communication issue. Glad I saw this post. BTW I just posted in your other post and at the time I misunderstood that it seemed like you didn't want to listen. Seeing this post, I can see you didn't fully understand what we were talking about. At any time if you don't understand something, please.....say so. We all, want to help out. Therefore if you don't understand something, please...just tell us and we can change how we've said it. Link to other explainations etc.
Those plugs come up as a copper core plug. IMO any copper core is fine in our cars. Brand isn't that important to me. Unless it's NGK, whenever you have an NGK plug check that the metal piece where the plug wire holds on is not a screw on. If it is..ensure it's MF'ing tight before you put it in the car. If it loosens you can get knock from a bad connection.
