Moresquirt:
DOF will not lubricate IMS bearings unless one removes the outer seal because the seal will prevent the injected oil from reaching the ball bearings and races.
IMS bearings rest on a support that plugs into the IMS tube. I'm guessing, but I don't know with 100% certainty, that the plug will stop oil from filling the IMS tube even if the rear seal leaks. The guys that rebuild Boxster engines will know better than me.
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