Well, I finally took the plunge. After so much time on BITOG, I decided to do it myself. Only took me about 30 minutes (not counting the trip I had to make to the hardware store for the drain plug washer ). As I declared earlier, I went with the TropArtic 5W-30 at $1.48/qt at wally world and a ST7317 filter. Speaking of which, on my '02 Frontier, it was a pain in the arse to get to the filter, through the wheel well, taking of the mud shield, and weaving my big hands and arm through various and sundry hose, tubes, etc. But managed without too much difficulty using my cap-style filter wrench. Used my new Rhino ramps, wheel chocks, and a center-wheels-style creeper that sucked (it's going back)! The drain plug looked like it had a copper washer on it...I didn't have one and used regular steel...is that okay? And what about a neoprene washer in addition as a seal? Will the heat cause a problem? Otherwise, all looks great, no leaks, oil pressure light off, and I couldn't be more pleased. I think I'm going to LIKE doing this!