Thanks for the reply fast4d. Yes it is the valley pan gasket that is leaking.

The dealer will cover all parts including hoses under the warranty but I have to pay for the labor cost, $900.00.

It will takes 7.5 to 8 hrs. works, It's good I noticed now before the warranty expires.

I was just wondering, if this is a common problem with 4.4 x5, did anybody think that this might be a subject for a recall. my x5 is 2002 and has only 108,645 km on it.