I'll tell you this much Cliff, the car ran so bad past say 4k that I was thinking that I had really big problems. It was just terrible to hear! Strange as this seems the plugs that I took out showed no signs of anything wrong. The electrodes and center insulator were intact, no pits or anything amiss. They were a uniform medium brown color shaded on one side. I will post pictures if it would be of use?
To look at the old plugs you would say maybe the fuel was a wee bit fat, maybe as my plugs usually on an annual change schedule look about what new plugs look like.
I also say this much too. I'm fairly sure I will never get the hang of using antiseize. I used to check the plugs at random intervals and I would find them a bit loose. It was annoying. That's why I switched to what was on the OEM plugs, just a light coat of oil. I got better results with the oil for getting them not to be loose. I suspect that I will buy one of those new T/Q digital wrenches for future use. I have this fear of pulling the threads as the feel to me is so different than tightening the plugs in an iron head. I know, I'm just nucking futs!
Tom