Just did my first oil change at 1100 miles, to get the new engine debris and machining dust, etc. out. I used Castrol Edge Advanced. I used a MC filter. Heads up on the MC filters, looks like MC has revised the filter, the PN is now FL-2062-a. The new filter is made in brazil and no longer has the rubber end caps. Also, the small o-ring is black, and the large cap o-rings are blue. I even verified it by calling my local dealer. The filter and o-rings fit just fine, used a fine film of new oil on the new o-rings, made sure the plastic cap threads were free of debris and torqued the cap to 25 NM. I drained the oil by removing the rear splash shield and removed the drain plug. I don't really like the drain plug design, and will keep my eye on it for leaks. I have a feeling that the oil pans will be redesigned and replaced in the future. Cast a metal insert in the composite, and use a traditional plug I think would have been better, but then there's the risk of cracking the pan due to excessive torque. Oil change itself was easy, I have owned 3 powerstrokes prior to the ST, the 6.0 PSD is a cartridge oil filter along with the fuel filters. I may upgrade to a K&N filter, but MC filters have never given me a problem on any of my past PSD's. I will however, keep a close eye on the drain plug.