Just finished changing the plugs on a 2005 XT outback. Thanks so much for this thread. Here are my few hints:
1. Battery and air filter box removal a must for my year
2. Remove the one 'button' that holds some type of fireproof matting on the fenders on both sides. The button is up toward the front. Just pry it off but don't rip the matting. It doesn't look like it will add much room, but it makes the world of different. They just rotate down and out of the way.
3. No need for 1/4" driver. I just used a regular wrench with a slight bend (offset wrench). A good collect of extensions pretty nice to have.
4. The swivel joint (universal, whatever) makes life much harder. No feel and it binds. I can't imagine trying to feel how tight the plugs are with that thing, and the binding wouldn't give good torque readings. A 2" extension with a 5/8 spark plug socket works perfect. Just pull the ratchet off before you back the plug out all the way or you can't anything out.
5. Passenger side rear was the hardest one for me
6. 180 deg twist didn't work for me, but I did have to twist them in all kinds of different ways to get them out. You have to unplug them! I was under the impression some people didn't unplug all of them. No idea how they can do this without unplugging them
7. anti seize compound on the new plugs makes threading them in by hand real nice and gives good feel for tightening them.
8. There is no feeling or click to putting the boot back on. They just slide on and that's that. I was nervous since I expected SOME feel to that... No issue with sliding on the boot. Just went on...
I do think that this year must be easier than earlier years since it wasn't too bad. Not a lot of room, but enough.
I am fairly mechanically inclined, have done spark plugs on a number of other vehicles (including Ford Ranger with 8 plugs for 4 cyl that are HARD compared to this) and was nervous about doing it. I shouldn't have been.
Time = 2 1/2 hours