I'm wondering what all of the talk on this board is really accomplishing. Before you flame me though realize I do not intend to criticize anyone. I'm an oil freak too and I read all the posts here. My only point is it seems that for all the posting everyone pretty much agrees that if you change your oil and filter ever 3000 you'll get a long life out of your vehicle. Let me give an example of what I'm talking about. I have a friend who's 88 Crown Vic with the 5.O liter V-8 has 220,000 miles on it. All he's ever done is change the oil every 3000 with a Wix filter. To top it off he has always used the oil that's in his dad's farm bulk tank. Mobil Delvac 1300 straight 30 weight. He's never read this board. He even uses the 30 weight in the Winter!! The Crown Vic runs like a top on its original motor and tranny. So, is the board really accomplishing anything in terms of making somebody's vehicle last longer? WE do have fun and all with the experiments and debates. I'm all in favor of that. But I wonder if the old mantra of change every 3000 isn't good enough for 98% of the population.