Swapped out plugs to the NGK Ruthenium. Not sure what to expect. Getting ready to hop on the highway and open it up. No noticeable improvement in idle.

This car is newish to me a (a year this month) and I don't drive it much. The pics I posted here are from just one cylinder. I haven't ever seen this before. Loose plug? Even the coil pack was saturated. It always ran fine with no CEL. Your thoughts?

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2004 X5 4.4 Build 01/04 Alpine White on Schwarz Dakota Leather, Anthracite Headliner
Xtrons Android HU, SPORT PKG, COLD WEATHER PKG(W/REAR HEATED SEATS AND HEATED STEERING WHEEL), CONVENIENCE PKG, FACTORY HITCH