Finally got around to the turbo oil feed line while I am doing a number of other things. Glad to stay that after pulling the filter and feed line off, neither were blocked and the turbo was getting heaps of oil. This is on a 100000km engine that has been serviced as per Ford service schedule. Was not as easy to remove as I thought due to the location and lack of access. Would be much easier to do this while the oil filter if off. Also I found using deep sockets works best, I used a 22mm and 24mm deep socket with a short arm shifter that I could get in to hold one nut at a time as I undid them in order. Here are some pictures of the OEM filter next to the current (revised) OEM filter. Notice the new filter is much larger inside the fitting as well as the feed holes: I also pulled off the oil feed line to clean it out. The line was not blocked but I blew the oil out and then filled it with carby cleaner and let it sit for 5 min then blew it our with compressed air. Also hit it with some wet/dry and metal polish. Before: After: