replacing the gasket between the upper and lower oil pans today, the upper pan cracked at one of the bolt holes. i now hold in my hand (well, when i'm done typing) a small piece of the upper oil pan. my question is: does this mean replacement of the entire upper oil pan? i'm thinking it can't just be welded or repaired (at least without having to remove it and if that's the case i'd just replace the pan). any suggestions before i have it hauled to the shop (haven't replaced the oil fearing it might all leak out while i'm driving). thanks.

mike