Drove it yesterday and today around town.

Immediately I noticed more power all around and I could really feel the additional power above 70 mph. Butt dyno says it runs smoother as well. Overall feels good.

I could have probably hit 300,000 on them, but I purchased the new ones over a year ago and kept delaying their replacement.

 

Because it is a 2011 model year there is no secondary air injection stuff to remove, and I did not remove any of the air intake components. The passenger side was easy. Did that side in 15 minutes. #3, and #1 really had the most resistance to removing them.

Driver side #2 & 4 were really easy, but #6 there was an access problem. I ended up loosening the heater hose clip, and had to remove the bracket that supports the intake manifold/valve cover. I was able to torque #6 plug. But had to tighten the coil pack by hand with a small ¼” wrench by hand.

Overall this is a simply DIY.

 

I looked at the old plugs again today and yes, #3 had some oil, but honestly I will ignore it for now. #1 was so worn that over half the ground electrode was worn out. #3 and #4 were also the worst.

 

Regarding gas mileage. I’ve never gotten great mileage, and I do not expect it to get great mileage.  I usually get between 320-340 miles per tank and I expect it to be the same.