I didn't take off the skidplates. I did take out the front bolts on the front plate, then loosened the bolts on the rear plate. Since the sucker still didn't seem to want to budge, I gave up that route. Next time, I'll take the plates off if I have to use a sawzall! But, it really worked ok laying in from the front, head next to the left front tire. Reached in right arm from behind the axle and in front with the left arm.
With the cup type wrench I stuck it in from the front and then connected the ratchet to it, slipped it on the filter, and off it came.
The little "rubber" cover thingie is still snapped on the wheel well, so I figured no one had ever taken it off. Wasn't sure if that was supposed to be a removable item or not.
Total oil change time on F250 Diesel: 20 minutes
Total oil change time on 4Runner: 2 1/2 hours
Yeesh!
Next one will be faster though!
Yeah, the oil change on the 3.4 is a real trick. After about 10 oil+filter changes I've finally got mine down to about 20 minutes. I think you're onto the right idea, but here is what I do:
1) loose filler cap, remove drain plug, drain old oil. duh
2) remove two of the snaps on the rubber "skirt" in the drivers side wheel well allowing me to reach my hand into bay to access the filter.
3) stuff two old T-shirts into the space under the filter. My engine has a grounding strap attached there that sort of holds the rags in place.I do not remove the skid plate because the rags catch the oil and I don't get any drip. I found the if the oil reaches the skidplate, it's already soaked the A arms and half of the engine anyway

4) Reach my hand in and loosen the filter. If it's too tight, I use the Craftsmen filter wrench with 16 inches of extensions. (
http://www.sears.com/shc/s/p_10153_12605_02820523000P )
5) pull the filter out through the hole in the fenderwell. It's a tight fit and you have to have some hand dextarity to flip it upright first and pull it out in one motion. It WILL fit and I even use the longer Napa 1516 sized filter.
6) insert new filter and hand tighten
7) replace drainplug
8) remove old T shirts and refill oil
Now that I've practiced a few times, I don't even need a spill mat on the garage floor and it takes 20 minutes or less. Interestingly my 3.4 L seems to always take 6 quarts to fill up. I think the most time consuming part of the operation is refilling it and refilling me:
