True, and it's not like I did a ten mile highway run and chopped the throttle and pulled over. They have a little idle/stop light on them.

Hard to read plugs these days with the fuel. Im sure a lot of the pictures of plugs we see are still old school stuff that shows more colour. From what I see the porcelain is usually "clean" or showing little colour [grey /tan] and generally uniform from top to bottom unlike yours which has a little too much on top. the outer ring seems to be black and fluffy. That's for a common [Australian] plug , not racing.



"Came too close to dying to stop living now!"

Seems to me maybe 1000 to 1500 miles

How many miles are on the plugs ,they look good to me maybe a bit lean maybe

Pulled plugs when replacing valve springs &c. Any insight?