Associated Oil Company
An American oil and gas company that built an integrated production, pipeline, refining, marine-terminal, and retail-fuel business on the Pacific Coast.
Last updated November 4, 2026
AI crawler reads
No AI crawler has read this profile since Oct 28, 2026.
Overview
Associated Oil Company was an American oil and gas enterprise formed around the Kern River oil fields of California at the beginning of the twentieth century. It emerged from an effort led by pipeline salesman W. S. Porter to consolidate the interests of major producers in the field. In 1900, the presidents of five important operating companies agreed to contribute their properties in exchange for shares and bonds, and agreements were subsequently obtained from dozens of other oil companies. Associated Oil Company was incorporated on October 7, 1901, and began producing and marketing crude oil on January 1, 1902. The company's early development was closely connected with the transportation requirements of Standard Oil interests and the Southern Pacific Railroad. Southern Pacific needed fuel for its steam locomotives, while the oil interests required a dependable route from inland California fields to the San Francisco Bay Area and Pacific shipping facilities. Associated therefore developed beyond simple crude production. Its 1905 acquisition of Matson's Pacific Oil and Transportation Company brought the Coalinga–Monterey pipeline, a refinery at Gaviota, and associated marine infrastructure into the business. In 1907, Associated Pipe Line Company was created as a subsidiary, with Southern Pacific providing rights-of-way and property along its railroad system. The pipeline network carried petroleum from the Bakersfield and Kern River areas to Port Costa, from where products could be shipped to China and other destinations. A major turning point came in 1913, when Associated completed the Avon Refinery, later known as the Golden Eagle Refinery. California crude from the San Joaquin Valley required processing before it could be used efficiently as locomotive or marine fuel. The refinery initially operated as a topping plant and enabled Associated to move into gasoline and kerosene production, in addition to its established fuel-oil business. The company also built Avon Village near the refinery because transportation and commuting conditions were difficult. By 1920 the company town included housing, a school, worker facilities, a dining hall, clubhouse, swimming pool, auditorium, bowling alley, and a post office associated with the company. Associated expanded its refining and terminal capabilities during the 1920s. It bought the Amoroco Terminal in 1923, gaining storage tanks, a wharf, pipelines, pumping equipment, and a topping plant. In 1924 it added clarifying and Edeleanu liquid-dioxide facilities at Avon; the latter was described as the first plant of its kind in the United States. The refinery's lubricants became important to the U.S. Navy, and in 1925 Avon became the first West Coast refinery to produce gasoline using a tetraethyl-lead additive. The Amorco Wharf received its first crude shipment from the tanker S.S. McKittrick in 1926. Associated marketed gasoline under the Flying A name and lubricants under the Cycol brand, supplying fuel for major San Francisco Bay Area infrastructure projects during the construction of the Golden Gate Bridge and San Francisco–Oakland Bay Bridge. The company's ownership and corporate structure changed substantially in the 1920s and 1930s. Associated stock held by Pacific Oil Company, a Southern Pacific vehicle for its petroleum interests, was transferred in 1926 to Tide Water Associated Oil Company, which also acquired Tide Water Oil Company. Standard Oil of New Jersey was a major shareholder in the holding structure, and later used Mission Corporation to hold interests in Tide Water and Associated. Associated also participated in international ventures, joining Mitsubishi in 1931 to establish Mitsubishi Oil in Japan and helping establish the Manchurian Oil Company in Dalian in 1934 under the Japanese wartime regime. In 1936, Tide Water Oil Company and Associated Oil Company were dissolved and combined to form Tidewater Associated Oil Company. The retail network used the Associated Flying A identity in the western United States and Tydol Flying A in the East, with the combined Flying A identity eventually becoming more prominent than the original corporate name. Getty acquired control of Mission Corporation in 1937. Associated was ultimately removed from the corporate name in 1956, ending the company as an independent identity. Its legacy survives in historic refinery facilities, archival material, surviving Flying A memorabilia, and a restored 1927 Associated Oil service station displayed at History Park in San Jose.
History
Associated Oil Company was created from a consolidation of oil producers in California's Kern River Oil Field. Pipeline salesman W. S. Porter persuaded the leaders of five major companies to pool their properties in return for shares and bonds, and secured participation from 34 additional oil companies. The resulting company was incorporated on October 7, 1901, and began operations in January 1902. Its development was shaped by the relationship between California petroleum production, Southern Pacific Railroad transportation, and Pacific maritime trade. Standard Oil interests and Southern Pacific acquired an interest in Associated to secure oil supplies and fuel for railroad locomotives. Associated broadened its physical network through the 1905 acquisition of Matson's Pacific Oil and Transportation Company, which included pipelines, a Gaviota refinery, and marine facilities. In 1907 it formed Associated Pipe Line Company, using Southern Pacific property along railroad routes to connect inland fields with Port Costa and overseas markets. The 1913 Avon Refinery, later called the Golden Eagle Refinery, was a decisive expansion. Before its completion, Associated concentrated on producing and selling fuel oils. The refinery made it possible to manufacture gasoline and kerosene from San Joaquin Valley crude, as well as to improve fuel quality for locomotives and ships. Associated constructed Avon Village beside the refinery to house employees and provide community facilities. The settlement had expanded by 1920 to include homes, a school, a bunkhouse, dining facilities, a clubhouse, an indoor pool, an auditorium, a bowling alley, and a company post office. During the 1920s Associated added terminal and refining capabilities. It purchased the Amoroco Terminal in 1923 and constructed clarifying and Edeleanu liquid-dioxide plants at Avon the following year. The refinery became an important supplier of lubricants to the U.S. Navy. In 1925 it became the first West Coast refinery identified in the reference material as producing gasoline with a tetraethyl-lead additive. The tanker S.S. McKittrick made the first crude receipt at Amorco Wharf in 1926. Associated sold consumer fuels under Flying A and lubricants under Cycol, and its products were used in connection with construction of the Golden Gate Bridge and San Francisco–Oakland Bay Bridge. Corporate ownership became increasingly complex. In 1926 Associated stock held by Pacific Oil Company was transferred to Tide Water Associated Oil Company, a holding company that also acquired Tide Water Oil Company. Standard Oil of New Jersey was a major shareholder in the wider structure, while Mission Corporation was later established to hold Tide Water and Associated interests. Associated also participated in overseas ventures, including Mitsubishi Oil in Japan in 1931 and the Manchurian Oil Company in Dalian in 1934. In 1936 the Associated and Tide Water companies were dissolved into Tidewater Associated Oil Company. Retail stations in the western United States used Associated Flying A, while eastern stations used Tydol Flying A. The separate Associated and Tydol names gradually receded in favor of Flying A. Getty acquired control of Mission Corporation in 1937, and Associated was removed from the successor company's name in 1956. The brand's physical and cultural legacy includes surviving Flying A artifacts, historical refinery structures, and a restored 1927 Associated Oil service station displayed at History Park in San Jose.
- 1956
Associated name retired
[1]The successor organization dropped Associated from its corporate name.
- 1936
Tidewater Associated Oil Company formed
[1]Associated and Tide Water were dissolved and combined into a new corporate entity.
- 1931
Mitsubishi Oil established
[1]Associated joined Mitsubishi in creating Mitsubishi Oil in Japan.
- 1926
Holding-company reorganization
[1]Associated stock held by Pacific Oil Company was transferred to Tide Water Associated Oil Company.
- 1925
Tetraethyl-lead gasoline production
[1]Avon became the first West Coast refinery identified in the source as producing gasoline with a tetraethyl-lead additive.
- 1924
Avon processing expansion
[1]Associated added clarifying and Edeleanu liquid-dioxide plants at Avon.
- 1923
Amoroco Terminal acquired
[1]The acquisition added a topping plant, storage, wharf, pipelines, and pumping infrastructure.
- 1913
Avon Refinery completed
[1]The refinery expanded Associated's output from fuel oils into gasoline and kerosene.
- 1907
Associated Pipe Line Company established
[1]The new subsidiary connected California production with Port Costa and Pacific shipping routes.
- 1905
Pacific Oil and Transportation acquisition
[1]Associated acquired Matson's Pacific Oil and Transportation Company, adding pipelines, a refinery, and marine facilities.
Products and positioning
A vertically integrated Pacific Coast petroleum company combining oil production, pipelines, refining, marine terminals, fuel distribution, and service stations. Its consumer-facing identity became associated with Flying A gasoline and Cycol motor oil.
Upstream petroleum · 1902
Crude oil
Crude oil was the company's original and foundational product. Associated consolidated production interests in the Kern River and San Joaquin Valley regions, then moved crude through its pipeline and marine infrastructure for refining, railroad fuel, industrial use, and export.
Refined petroleum · 1902
Fuel oil
Fuel oils were Associated's principal marketed petroleum products before the Avon Refinery expanded its output. They served industrial, locomotive, and marine applications, matching the company's close relationship with Southern Pacific and Pacific shipping.
Motor fuel
Flying A Gasoline
Flying A was the company's principal gasoline identity and later became the dominant retail name used by successor operations. Associated stations operated under Associated Flying A in the West, while related Tydol Flying A stations appeared in the East.
Lubricants
Cycol Motor Oil
Cycol Motor Oil was Associated's branded lubricant line. The company's Avon refining facilities produced high-quality oils, and the source states that Avon lubricants were purchased exclusively by the U.S. Navy for many years.
Refined petroleum · 1913
Gasoline and kerosene
After the 1913 Avon Refinery began operation, Associated manufactured gasoline and kerosene from California crude, diversifying beyond fuel oils and supporting its growing retail and industrial distribution business.
Brand decisions
1936
Combine with Tide Water Oil CompanyM&ABackground
Associated and Tide Water had been placed within a shared holding-company structure during the preceding decade.
Action taken
The two companies were dissolved and reorganized as Tidewater Associated Oil Company.
Aftermath
Associated ceased to operate as an independent corporate entity, although its retail and product identities continued within successor operations.
1926
Move into the Tide Water Associated holding structureM&ABackground
Southern Pacific-related oil interests were being reorganized through Pacific Oil Company and a broader holding-company structure.
Action taken
Associated stock held by Pacific Oil Company was sold to Tide Water Associated Oil Company, which also acquired Tide Water Oil Company.
Aftermath
The transaction prepared the corporate combination that ultimately dissolved Associated into Tidewater Associated Oil Company in 1936.
1913
Expand into gasoline and kerosene refiningProduct launchBackground
Associated had primarily produced and marketed fuel oils, while high-gravity San Joaquin Valley crude required processing for efficient locomotive and marine use.
Action taken
The company built and operated the Avon Refinery, a topping plant that enabled gasoline and kerosene production.
Aftermath
The refinery became the center of Associated's downstream business and was later known as the Golden Eagle Refinery.
Sources1 sources
Cite this profile: Cite the canonical profile. /brand-wiki/associated-oil-company · Editorial policy · How profiles are compiled