You can claim the Head of Household filing status on your tax return if you pass the support test, the residency test for a qualifying person, and are unmarried at the end of the year. There are also special rules that relate to separated parents and married couples who live apart from each other.
Motor oil. Motorcraft also sells motor oil for automotive use. As of the late 2000s most of their oil is a synthetic blend or fully synthetic. Several weights are available from the 5W-20 all the way to a 15W-40 for diesel engines.
The AutoCraft battery brand name is owned by Advance Auto Parts (AAP), but AAP does not manufacture batteries. There is no large plant somewhere owned by AAP making them. The plants exist but are independent battery manufacturers, including GNB (formally Gould National Battery), and Johnson Controls Inc. But other more localized and smaller manufacturers also contribute to the demand created by AAP's 3200+ retail locations.