by salt36 on Mon Jul 15, 2013 3:22 pm
Agree with both above comments, burning clean and in good condition.
Plugs should be changed at 100,000K
I have tried several types and have now reverted to the originals as above, no benefit in using others.
EDIT; I have tried to re-gap these plugs and the outer bits tend to break off.... The plugs are designed to run a large gap, I wouldn't bother. Replace if you think they need it, cheap at about $30 for a set of 6.