My 05 S-Crew is the first vehicle I've done much maintenance, etc. on. I've really learned a lot with it.
Today I changed my plugs. It was not as bad as I anticipated. I'm glad I had bought Grantatelli coil connectors. The original plug wires were not impressive. In fact, you could say the spring sprung when I pulled them off the coil.
I don't know much about plugs, so I'm posting pics of the old ones for some of you guys to tell me what you think of them. Do you see anything that should give me cause for concern about how my truck is running?

 

They look normal to me.How many miles on them,about 40k?

 

55,000
Thanks for helping me feel well about them.
I'll tell you, those wires/springs? pulled right out and stretched like you would never believe when I took them off.
I have a better idle, too. Seems it always had an intermittent shake at idle. Not it seems to be gone.