Henry Clay Folger was head of the company until 1923, when he was succeeded by Herbert L. Pratt. Beginning February 29, 1928 on NBC, Socony Oil reached radio listeners with a comedy program, Soconyland Sketches, scripted by William Ford Manley and featuring Arthur Allen and Parker Fennelly as rural New Englanders. Socony continued to sponsor the show when it moved to CBS (1934-35).
In 1931, Socony merged with Vacuum Oil to form Socony-Vacuum. In 1955, Socony-Vacuum was renamed Socony Mobil Oil Company. Its current logo was introduced in 1966, the same year it was named Mobil Oil Corporation. The name was finally shortened to Mobil Corporation in 1976.
From 1936 to 1968, Mobil sponsored an economy run each year (except during World War II) in which domestic automobiles of various manufacturers in several price and size classes were driven by light-footed drivers on cross-country runs. The Economy Run originated with the Gilmore Oil Company of California in 1936 (which was purchased by Socony-Vacuum in 1940) and later became the Mobilgas Economy Run and still later, the Mobil Economy Run. The cars driven in the economy run were fueled with Mobil gasoline and Mobiloil and lubricants were also used. The vehicles in each class that achieved the highest fuel economy numbers were awarded the coveted title as the Mobilgas Economy Run winner.
Through the years, Mobil was among the largest sellers of gasoline and motor oils in the United States and even held the top spot during the 1940s and much of the 1950s. Various Mobil products during the Socony-Vacuum and Socony-Mobil years included Metro, Mobilgas and Mobilgas Special gasolines; Mobilfuel Diesel, Mobil-flame heating oil, Mobil Kerosine, Lubrite, Gargoyle, Mobiloil and Mobiloil Special motor oils; Mobilgrease, Mobillubrication, Mobil Upperlube, Mobil Freezone and Permazone antifreezes, Mobilfluid automatic transmission fluid, Mobil Premiere tires, Mobil Stop-Leak, Mobil Lustrecloth, among many others.
In 1954, Mobil introduced a new and improved Mobilgas Special in response to trends toward new automobiles powered by high-compression engines that demanded higher and higher octane gasolines. The newest formulas of Mobilgas Special was advertised as offering "A Tune-Up in Every Tankful" due to a combination of chemicals known as the "Mobil Power Compound" which was designed to increase power, check pre-ignition ping, correct spark plug misfiring, control stalling and combat gumming up of carburetors. Later Mobil campaigns advertised Mobilgas as the "New Car Gasoline" following extensive testing during the annual Mobilgas Economy Run.
In 1962, the gasoline product lines marketed as Mobilgas and Mobilgas Special were rebranded as Mobil Regular and Mobil Premium in a move to emphasize the shortened brand name "Mobil" in promotional efforts although Mobiloil continued as a single word term until the 1970s. After a few years of advertising Mobil gasolines as "Megatane"-rated and as "High Energy" gasolines, Mobil in 1966 began promoting both its Regular and Premium fuels as "Detergent Gasolines" due to additives designed to clean carburetors and various internal engine parts. During the early 1970s, Mobil ran a TV commercial featuring a character known as Mr. Dirt to show the ruinous effects that dirt had on automotive engines for which a tank of Mobil Detergent Gasoline could provide a cure and preventive medicine against damage that could lead to costly repairs. Speaking of detergent gasolines, as automakers were switching en masse from carbureted to fuel injected engines during the early to mid 1980s and detergent additives which existed in most available gasolines were insufficient to prevent injection clogging leading to drivability problems, Mobil received accolades from General Motors and other automakers for increasing the detergency of its Super Unleaded gasoline in 1984 to prevent formation or deposit build-ups of the injectors but also remove existing deposits as well in normal driving. At the end of the 1980s Mobil sold its fuel stations in Norway, Sweden and Denmark to Norsk Hydro, who converted them into Hydro stations.
William P. Tavoulareas was President of Mobil Corporation until succeeded by Allen E. Murray in 1984.
The wider Mobil brand encompasses the Mobil service station and fuel (gasoline, diesel, heating oil, kerosene, aviation fuels and marine fuel) divisions. The Mobil brand also covers the wide range of lubricants (commercial & industrial, aviation and marine).
In Spring 2004, Lukoil purchased 779 Mobil gas stations throughout New Jersey and Pennsylvania, and in 2005 began converting them to the Lukoil brand.