My 2003 GMC Yukon just turned over 300,000 miles. It has the 5.3L engine that has never been touched except for spark plugs and wires. Regular maintenance has always performed like clock-work ever since I bought it. It runs like new and doesn't leak anything. it's the best vehicle I have ever owned and has never left me stranded. I hope to get another 100,000 out of her.