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.
There are three main three main categories of consumer motor oil. There are conventional petroleum-based oils, and there are synthetic versions created from chemicals. A third category includes products called part synthetic, which combine conventional mineral oil with man-made chemicals. Conventional motor oil is based on crude oil that goes through extensive refining to make it suitable for engine use. Synthetic oil, however, is created through chemical reactions. And like so many other technological advances, synthetics were born in a time of conflict.