I joined this fourm some 2 years ago to try to make my used cars last longer with less oil consumption. I drive my cars to 250,000+ and by this time they have consumed oil and were generally on their last leg engine wise. I hope that my current car my be in better shape when it hits the 200,000+. I have learned a lot and now use mobil 1 synthetic oil instead of Castrol GTX. I use auto-rx,techron, and Marvel Mystery oil. I do regular UOA's and have used Terry Dyson analysis. My current Honda Accord has 142,000 and runs as new with zero oil consumption. What do you guys that get to 300,000 and the engine is in good general shape do?