Originally Posted by jackfortune
Fortunately, the second banjo bolt (that feeds oil pressure to the driver's side AVCS) is not as significant as the one that feeds the turbo. However, in the unfortunate circumstance that there may have been long OCI's or poor grade oil used by a previous owner, this second one should also be checked/replaced.
As a guide on how much might it be worth to access the driver's side filter, I recently pulled both (~156k with only partially known previous OCI history). The turbo side was blocked about 50% and the driver side was still clear by about 75%. Obviously your car might be different. I replaced the turbo side with the IP&T filtered oil line and the other side with a new filtered bolt with the nipple on the top ground off to make it easier to remove if there's a next time.