Given that I have a 2.0CDTI engine (A20DTH) and that last winter I had the low oil pressure light pop up for a second or so when starting the engine in the morning, I thought I should replace the O ring on the oil pickup from the sump. 

After taking the sump off and removing the O ring I did notice that it was stiff and brittle and I replaced it. Since the O ring was so brittle I decided to take a couple of bearings off and inspect them and the crank. I've uploaded some images.

Can someone