Morning XF SRT-6 owners, I need your input on something. I'm from NYC and I have an '05 SRT-6, 20k miles. the car is parked most of the time since I don't drive much during the week.

I recently notice a "knocking" sound or more or so a grinding sound coming from under the hood. I took it to a friend of mines who is a mechanic; he took the cover off the hood and told me that it's coming from the Supercharger but more or so the front of it, near the pulley and drive belt. If you take your hand and rub the Supercharger from the back of it to the front, you'll almost instantly feel it near the front. It sounds like there are bearings in it that may be dried and grinding but he wasn't sure. Either that or the Supercharger is going bad . I was advise not to drive it until he can open it up and see what's going on; in the event that any parts cease up or break, it can potentially drop down in the engine which could then be a disaster.

Anyway, have anyone experience this problem? Do tell. Otherwise all other advise would be appreciated, thanks in advance!!!