I know Motorcraft 400S is all the rage right now on the forums, so I thought I'd recommend an easy way to order these filters - Walmart.
http://www.walmart.com/ip/MotorCraft-Oil-Filter-FL400S/16817360
Simply type in your zipcode, and the online store locator will be able to tell you if the filter is in stock. Walmart also has free site-to-store, which can ship the filter in if your local store does not have it. Obviously can apply to any filter for that matter.
I used Walmart and their site-to-store feature for my General Altimax tires on the Focus - worked out rather well! (and cheaper than the going rate on Tirerack.com)
http://www.walmart.com/ip/MotorCraft-Oil-Filter-FL400S/16817360
Simply type in your zipcode, and the online store locator will be able to tell you if the filter is in stock. Walmart also has free site-to-store, which can ship the filter in if your local store does not have it. Obviously can apply to any filter for that matter.
I used Walmart and their site-to-store feature for my General Altimax tires on the Focus - worked out rather well! (and cheaper than the going rate on Tirerack.com)