Answers like that are one of the things I like about this club! It seems that no matter whatteh question, there is someone who can answer the "what" as well as the "why." Slightly off the point but still relavent: I have switched to platinum plugs in all my brand Xs. They have a tiny center electrode that doesn't wear much. When it does wear, its so tiny that it doesn't really round off, it just sort of receeds. For the last 10 years or so I've used them in everything and I generally look at them when they have about 60,000 miles on them and I replace them at around 120,000. The ONLY reason they aren't in my 65 Crown right now is that its hard as heck to just get a set of plain old Champions in this town when the parts store computers don't go back past about 1980 and the kid at the counter doesn't know how to look it up by part number. "A Champion J-What?" Anyway, I like them and maybe they will help some other folks too. ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/.