Just so you know changing your oil every 3,000 oils is doing more harm than good. Synthetic oils begin to become effective at around 5,000 miles. If you're not using synthetic oil, you're using the wrong oil. Just tips for your new engine. You were trying to keep up with an M3 for 200 miles? Must've been a wild ride. What were the signs/symptoms when you experienced failure? Was it sudden? noises?