I just did the plugs on my 2010 at 30K miles. I did the passenger side in like 5 minutes and the driver's side in like 20. Lol. I don't have too much room for my big hands. So of course I did it the right way with an impact gun set at the highest level and the regulator maxed out. It worked perfectly.
So do these plugs look normal for a 4.0? To me it looks like the combustion is a little lean. Chris4x4 where are you?