Wife's XC60 has been getting worse over the past couple of weeks to a point where I need to address this. I put it on the lift and had her start it so I could identify the location and it's coming from somewhere under the heat shield, but things are so tight in there. I looked at VIDA/AllData for removal of the components and they make it look all too easy. Unfortunately, I don't see a great way to get in there to even remove the bolts to the heat shield, let alone tighten whatever is leaking. God forbid I need to replace a gasket up in there. I hope one of you has some insight on this, because short of dropping the subframe/engine, I don't really see how this is possible.