I have a 1992 2.5 non-turbo automatic. Before parking it (6 years ago) I ran OE spec Champion RN12YC plugs. Standard, copper, cheap and still available. Pulled them today (about 5,000 miles on them before parked) and they look pretty good, nice even brown color, no corrosion, etc. Now that I am working to put the car back on the road and have to replace a LOT of stuff, what are you running? Should I be looking at some of the newer platinum or iridium plugs that are availible? Any gains over the $1.99 standard OEM spec ones?