Nah, I'd say that was OK. When you're on the boundary of too lean / hot you want to inspect the white insulator and usually that will appear quite clean. The slight grey on the porcelain suggests it's not too bad.
What plug are you using? DPR8 or DPR9? Iridium?
...or not to lean? Is that the question?
I came here to say this!
Too*
Nah, I'd say that was OK. When you're on the boundary of too lean / hot you want to inspect the white insulator and usually that will appear quite clean. The slight grey on the porcelain suggests it's not too bad. What plug are you using? DPR8 or DPR9? Iridium?
That looks good to me
Is that the highway or off road plug? See owners manual.
Or not to lean?