Basically we need to know if you're supercharged or not. If you are SC stick with copper plugs since platinum and the like are usually bad news for supercharged motors.
And as stated before, this forum is open to all cars.

Alright, alright, I hope you guys are happy now. You guys sure put me through the ringer on this thread.

Now you fit in just fine in the 2k forum (read the description), we know what engine you have, and we also know it'* a LeSabre for any accessory or chassis wiring differences.

Aww, Bill....you could have had some fun and added at the end...."moving to other 3800 powered cars".

I had a '96 Buick Regal, and just had my daughter buy a '98 Regal GS. Hardly anti-Buick. If it has an image problem, it'* more the idea that it is an old person'* car. But, then again....so is the Bonneville.

In this case, whether or not you're supercharged is the major issue, but with other issues, there will be huge differences between the cars and we could give you very wrong information.

Something that should be considered when talking about 100K plug is that the gap still becomes an issue.

The plug may last longer without breaking down...the gap still increases beyond a good usable area.

I pulled the plug out of cylinder 1 to get the Delco number off of it and while I was at it, I went ahead and measured the gap; .060 exactly.

I may go ahead and milk these plugs as long as I can concidering the cost of the new ones. And plus, I have to buy new wires at plug time too.

BTW, would anyone care to take a stab at some of the questions I have in this thread?

I believe rrounds did. Was there more information that you needed?

The only thing he didn't answer is the why cost question, and that'* not one we would really know. Why is there ever any part cost disparity?

Is that the only difference between the two plugs is the platinum center electrode? And if so, how important is the platinum center electrode and does it justify the difference in cost?

Yes, can you tell me if all three plugs have the same heat range?

Is the Double Platinum plug equal to the Iridium plug in performance and quality?

Of the three plugs listed at the top of this thread, which one would YOU choose for an L36 3800 and WHY?

the platinum is on the ground electrode and the Iridium is on the positive side (center electrode) of the plug. A double platinum plug is not as good as the Iridium plug. i run the TR55-IX and other than maybe going to a colder plug on my next plug change i would not run a different plug than the Iridium. the smaller the center electrode is the less voltage it takes to jump the gap in the plug, you get a more concentrated spark. Denso makes the smallest center Iridium electroad (0.4mm vs 0.6mm for the NGK).

ROD