These additives are used to make the oil. amulti-grade motor oil, though it is possible to have a multi-grade oil without the use of VIIs. The idea is to cause the multi-. grade oil to have the viscosity of the base grade when cold and the viscosity of the second grade when hot.
Midland County is a county located in the U.S. state of Texas. As of the 2010 census, the population was 136,872. The county seat is Midland. The county is so named as the county is halfway (midway) between Fort Worth and El Paso on the Texas and Pacific Railway. Midland County is included in the Midland, TX Metropolitan Statistical Area as well as the Midlandâ Odessa Combined Statistical Area.
Midland was originally founded as the midway point between Fort Worth and El Paso on the Texas and Pacific Railroad in 1881.idland was forever changed by the discovery of oil in the Permian Basin in 1923 when the Santa Rita No. 1 well began producing in Reagan County, followed shortly by the Yates Oil Field in Iraan, Texas. Soon, Midland was transformed into the administrative center of the West Texas oil fields.