I did mine myself at about 4,000 miles. It is a pretty easy change once you have the parts (other than the filter can needing major muscle to twist off without the small filter wrench - I'll have it next time). Because the filter is in front and points straight down, it was a nice, clean job.

I needed two trips to the dealer for the parts. They didn't have the filter element so they ordered it. The parts man said the o-ring would come with it, it doesn't so I had to order it and come back again. I wonder what they would have done if I brought it in for the oil change - keep it overnight?

Hopefully the '06 and the '05 use the same element and o-ring so I can just get a supply of them.

I usually get the Motorcraft 5W-20 at Autozone. Think I paid $2.29 a quart last time.