I have full Shrock skids (including the front radiator skid designed for use with the stock front bumper), and no place to do my own oil changes. Here are a few things I noticed that last time I had the local Nissan dealer change the oil:
- They used some sort of a filter-grabber on the end of a short pole (OK, so that's probably not the technical name for it) that looked like the thing you use to get a light bulb that is up on a high ceiling. Sort of a basket on the end of a pole that with fingers that fit into the indents around the filter. The tech had no trouble getting the old filter out or the new one in through the little round hole in the Shrock skid. The factory "skid" has a similar access hatch, and it's even bigger than the one on the Shrock.
- Oil drained out fairly well from the drain plug through the hole in the engine skid, but they did have to do some clean-up.
- The tech used some sort of spray (degreaser?) cleaner to clean the inside of the front and engine skids, and shot some compressed air in there to dry it out. He spent a fair amount of time cleaning, but I think he did a good job. I only noticed a small drop or two of oil around one of the skid plate bolts later.
- I noticed later (after I banged the heck out of the access hole) that there was still some oil residue inside the front plate, but not much.
- Bottom line: for $30 it was worth it to let the dealer do the oil change.
- The best part was when the tech had the truck up on the lift, about 6' off the ground, another tech walked out into the service bay, saw the underside and said "Holy moly! This thing really goes off road!". I don't think they see a lot of Xterra's that have probably spent more time in 4WD than in 2WD.