The Toyota 3UR-FE 5.7L V8 engine found in Toyota Tundras, Sequoias, Siennas, Land Cruisers, and Lexus LX570s suffer from cam shaft tower leakage, and it will most likely happen to anyone that owns one. It can happen anywhere from 1k miles to 90k miles, but it can damage the engine and other important parts and I think it should be recalled. Otherwise, you will have to pay a very heavy price to get it repaired. IT IS ALSO A SAFETY ISSUE, as it leaks in to the exhaust and could cause a fire.