See my earlier post:
http://www.x3world.com/x3-e83-forum/...500-miles.html
For the most part follow instructions here:
http://xoutpost.com/articles/x5/engin...w-x5-3-0i.html
Use 6.6 quarts of oil for the X3. 36 mm socket for the oil filter cover. 17mm socket for the drain plug. This is where I got mine, but local autozone or advance has them:
http://cgi.ebay.com/ebaymotors/36mm-...1907QQtcZphoto