Originally Posted by GXP Venom
Ya with the bitch of a time to get the back 4, I'd stay with the OEM double clad plats. I believe the service interval for them is 100k. I wouldn't worry about it just yet unless the car is getting sluggish or MPG is beginning to decline. OEM is a proven long term plug. Not much to critique about that.
O common on guys its not really that bad,
my OLD'* with the 3.8L was almost worse then the GXP.
Just changed the plugs with 68,000 on the clock and was glad I did! Not because they looked bad or was causing any problems. But when I started to take them out I thought the threads were going to come out with them or they would break off... they kinda grinded, scraped as they came out. It was the worst I experienced in 30 years and on 10 ten different vehicles, aluminum heads or otherwise! all that I would say is I hate to see what it would have been like at 100K mi
Just take it slow and easy when your removing high mileage plugs. don't forget the anti-seize when you put them back in. Just a little will do it!
I would comment that I put in Bosch Platinum Plus 4 and they seem to be running great for the last 1K miles. Figured I'd try these because I ran them in my OLDs 3.8 for over 200K miles without any problems or decline in gas mileage.