For 1997 – 2007 Porsche we encourage all owners to perform an IMS (intermediate shaft) bearing update to prevent chips from the disintegrating IMS bearing from entering the oil. Worse, if the bearing totally fails the engine usually self-destructs. Here showing a 996 engine with new main seal and LN Engineering IMS bearing update installed. More about the problem and the LN kit here. Alternatively, we can install an IMS alarm warning system.