Ive been using Napa Gold (Wix) filters,which I can buy for about three dollars each when I can catch a sell. I buy them a case at a time. At the dealership where I work, I can buy motorcraft filters for about three dollars. At that price, I dont have to wait for a sale and I dont have to stock up. Can do an oil change with bulk MC oil and filter for under fifteen dollars. How do the Motorcraft filters compare to the Wix?