Edit: 07 Q7 4.2FSI

Why is engine removal required for an upper oil pan re-seal? Are there inaccessible bolts, other equipment going through it? I don't have the Bentley manual yet, but this leak is getting to me and I want to start planning the fix. I am used to dealing with access issues and working around them for heavy equipment and plant machinery, but this engine is new to me and the wife's car... So just winging it and having the car down for an extended period of time wouldn't go over well.