We remove the rear seals on the oversized non-serviceable IMS bearings any time we have reason to be in there, or when customer's request it; been doing it for years without any issues.
We also always recommend running oil fill levels two bars below the full mark on (cold) the electronic displays, and have been doing so for many years. We found that the cars respond with noticeably fewer "smokey starts" the Boxster's are famous for, and reduced AOS failures.
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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