You took your engine apart. R&R'd the transmission. Messed with the valve body for days on end. Made a switch for the center diff so the AWD would work.There will be a sticker on the part of the dash that faces the drivers side door if you have one.
Me, I'm trying to figure out how anyone could say those black pieces that hold the glove box door up 'pop out', I gave up when they started to break.
Gross filter is better than no filter. I put mine in at 110k, there was lots of nasty in there that could have been avoided if the previous owner knew to pop one in203,000 miles on mine, even if it were done when I bought it with 55k, it's been in there a long time.