Took the outer seal off just now, Everything looks OK, and the bearing spins more freely with the seal off. But there is no lubricant other than a film of light oil that I can see, so I suppose the original lubricant is gone. It seems that the bearing was not in imminent danger of failing, but I wonder what the long term would have brought. I had an engine blow up in a car years ago, and finding a good used replacement engine seemed fraught with risks, so I would not enjoy doing it again, for the Boxster. I expected that the bearing would be OK. I'm still happy I did this.
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