I'm not sure I would draw such a conclusion based on this thread, Gregski! First of all, I don't know how specific this mount is to the 960 series. Second, this is a rubber part, so like any other bushing-type mount, they will wear. How long they will last, depends on a lot of variables. I don't believe in replacing every part within easy reach on a preventitive basis (there are others here that will disagree). On critical parts, the preventative argument is more compelling to me. As for this mount, it's pretty obvious when this part needs to be replaced. Just take a look at the bolt. If it's sticking through the skid plate, or approaching it, then do it. At least that's the way I look at it.
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John Shatzer, '97 V90 @ 105K