After 100,000 miles are the plugs supposed to look pretty? I'm not an expert but that's my 2 cents.
The plugs look ok. Some have oil burnt off.... nothing major.The dealer said they would have changed them at 80k... which prob is conservative... so 100k isnt prob that bad... they are expensive plugs... denso iridium I think... they prob last much much longer than standard plugs... either way once a year is way to frequent for plugs IMO... to the back 3... so I wont be replacing again until 200k![]()