Editing Sunoco (section)

===1960s to 1990s: acquisitions and branding===
In 1967, Sun Oil established its [[Great Canadian Oil Sands|Great Canadian Oil Sands Limited]] facility in northern [[Alberta, Canada]] to access the estimated 300 billion barrels (48&nbsp;km<sup>3</sup>) of extractable oil in the [[Athabasca oil sands]].<ref>{{cite news|title=The oilsands at 50: Will they still be producing in 100 years?|url=https://www.cbc.ca/news/business/great-canadian-oil-sands-50th-birthday-1.4309424}}</ref>

In 1968, Sun Oil merged with [[Tulsa, Oklahoma]]{{En dash}}based '''Sunray DX Oil Company''', which refined and marketed fuel under the '''DX''' brand in several midwestern states, and included several refineries.<ref>{{cite web |url=https://law.justia.com/cases/federal/appellate-courts/F2/398/447/30107/ |title=Sunray Dx Oil Company, and J. H. Douma, R. E. Foss, R. Paul Henry, R. W. Mcdowell, L. G. Rodgers, and C. H. Wright, Appellants, v. Helmerich & Payne, Inc., John C. Priest, Andrew J. Musacchio and James Crum, Appellees, 398 F.2d 447 (10th Cir. 1968) |publisher=[[United States Court of Appeals for the Tenth Circuit]] |date=July 12, 1968}}</ref> Its Tulsa refinery was operated by the company until its sale in June 2009 to Holly Corporation of Dallas.<ref>{{cite web |url=http://files.shareholder.com/downloads/FTO/0x0xS950134-09-7659/48039/filing.pdf |title=Holly Corp Form 8-K |publisher=[[Holly Corporation]] |date=April 16, 2009}}</ref> This move expanded Sun Oil's marketing area into the mid{{En dash}}continent region.

The company continued marketing its petroleum products under both the Sunoco and DX brands through the 1970s and into the 1980s. In the late 1980s, it began rebranding DX stations in the Midwest to the Sunoco brand, but by the early 1990s, they pulled out of virtually all areas in the southeastern U.S. and west of the Mississippi, resulting in the closing and rebranding of service stations and jobbers to other brands in those areas, notably [[Sinclair Oil|Sinclair]] in Oklahoma and [[Kerr-McGee]] and [[Chevron Corporation|Chevron]] in Arkansas.

With increased diversification, Sun Oil Company was renamed Sun Company in 1976. In 1980, Sun acquired the U.S. oil and gas properties of '''Texas Pacific Oil Company, Inc.''', a subsidiary of [[Seagram|The Seagram Company Ltd]], for U.S.$2.3 billion {{En dash}} the second largest acquisition in U.S. history to that date.

Through the 1980s, Sun developed oil interests in the [[North Sea]] and offshore China and expanded its holdings in both oil and coal with additional U.S. business acquisitions. In 1983, the company launched Sunoco ULTRA 94, the market's highest octane unleaded fuel. Then in 1988, Sun undertook a restructuring to segregate its domestic oil and fuel exploration and production business and focus the company on its refining and marketing business. This led to the acquisition of [[Atlantic Refining and Marketing]] (and, in effect, that company's [[convenience store]] chain, [[A-Plus (store)|A{{En dash}}Plus]]), including its Philadelphia refinery which was later merged with the former [[Gulf Oil]] refinery that Sunoco acquired from [[Chevron Corporation|Chevron]].

By the 1990s, the company had departed the international exploration business and was fully dedicated to its branded products and services. In 1994, Sun acquired the Philadelphia [[Chevron Oil]] refinery consolidating operations with its own adjacent which it had acquired with Atlantic. It sold its remaining interest in Canada's [[Suncor Energy]] in 1995 but markets products from two refineries {{En dash}} one in [[Toledo, Ohio]], and the other [[Sarnia, Ontario]] {{En dash}} in joint ventures.<ref>{{cite web|url=http://www.sunocochem.com/products/sarniaf.htm |title=Sunoco Chemicals and the Sarnia Refinery |publisher=Sunocochem.com |access-date=2011-11-25}}</ref> In 1998, Sun Company, Inc. became Sunoco, Inc. In 2011 the Toledo facility was sold to [[PBF Energy|PBF Energy, Inc.]]

In 1998, Sunoco acquired the chemical business of [[Allied Signal]], including a [[phenol]] plant. The business was renamed as "Sunoco Chemicals, Inc."<ref>{{cite news |url=https://www.hydrocarbononline.com/doc/sun-co-to-acquire-alliedsignals-philadelphia-0001 |title=Sun Co. to Acquire AlliedSignal's Philadelphia Phenol Facility |work=Hydrocarbon Online |date=April 2, 1998}}</ref> In 2011, the plant was acquired by [[Honeywell]] for $85 million.<ref>{{cite news |url=http://www.philly.com/philly/blogs/inq-phillydeals/Sunoco-sells-Philly-plant.html |title=Sunoco sells Philly plant to Honeywell |first=Joseph N. |last=DiStefano |publisher=[[Philadelphia Media Network]] |date=May 18, 2011}}</ref>