Exhibit 99.1

Sunoco, Inc.

1735 Market Street

Philadelphia, Pa. 19103-7583

No. 6 -10

SUNOCO REPORTS FOURTH QUARTER 2009 RESULTS;

MAINTAINS FOCUS ON COST REDUCTION;

TAKES ADDITIONAL ACTIONS TO IMPROVE BALANCE SHEET AND LIQUIDITY

PHILADELPHIA, February 4, 2010 — Sunoco, Inc. (NYSE: SUN) today reported net income attributable to Sunoco shareholders of $26 million ($0.22 per share diluted) for the fourth quarter of 2009 compared to net income attributable to Sunoco shareholders of $204 million ($1.74 per share diluted) for the fourth quarter of 2008. Excluding special items, Sunoco had a loss for the 2009 fourth quarter of $31 million ($0.27 per share diluted) compared to 2008 fourth quarter income of $313 million ($2.68 per share diluted).

For the full-year 2009, Sunoco reported a net loss attributable to Sunoco shareholders of $329 million ($2.81 per share diluted) compared to net income attributable to Sunoco shareholders of $776 million ($6.63 per share diluted) in 2008. Excluding special items, Sunoco reported a loss of $37 million ($0.32 per share diluted) in 2009 compared to income of $874 million ($7.46 per share diluted) in 2008.

Year in Review

“While we entered 2009 expecting a challenging market for petroleum and chemical products, the depth and scale of the global economic downturn and its impact on our industry was even greater than anticipated,” said Lynn Elsenhans, Chairman and Chief Executive Officer. “In this difficult environment, the Company continues to take aggressive actions to address those issues within our control. While our refining and chemicals results were significantly impacted in 2009 by weak demand and rising feedstock costs, we managed to produce strong earnings in our other businesses as a result of good execution and a sharp focus on costs. We successfully executed our business improvement initiative, exceeding the targeted $300 million in cost savings on an annualized basis by the end of 2009. Despite the challenging economy, Sunoco also effectively managed working capital and maintained a relatively strong financial position.”

“In 2010, we expect to see a full year’s benefit of the lower cost structure from both the business improvement initiative and closure of the Eagle Point refinery. We will also benefit from reducing the dividend and scaling back our pension and healthcare benefits.”

As previously disclosed, the changes to pension and healthcare benefits are effective June 30, 2010. As a result of these changes, pension and retiree medical liabilities were reduced by approximately $95 million as of December 31, 2009, which will be recognized as a benefit to income through 2019.

Strategic Portfolio Changes

Elsenhans continued, “We continue to expect a challenging market for petroleum and chemical products due to ongoing economic weakness and excess global supply. However, the Company has responded to the market environment with several strategic actions to improve our competitive cost position and optimize our portfolio and operating performance. Most recently, we announced that we have shut down our previously idled Eagle Point refinery and that we have signed a definitive agreement to sell our polypropylene business, which comprises a significant portion of our Chemicals business, for approximately $350 million in cash, which we believe represents good value for our shareholders. Earlier in 2009, we sold our Tulsa refinery and Retail Home Heating Oil business. These portfolio changes addressed areas of the business that were not meeting their cost of capital and allow the company to redeploy capital to the growth of our Logistics and Coke businesses while continuing to invest in our strong retail brand.”

Sunoco expects to take a pre-tax charge in the first quarter of 2010 for the loss on the sale of the polypropylene business of approximately $185 to $195 million.

The Company’s capital spending for 2010 is expected to be approximately $840 million with approximately $280 million of growth capital allocated to the Coke business for the construction of a new coke plant at Middletown, OH and for committed Logistics opportunities.

Sunoco Takes Actions to Improve Balance Sheet and Liquidity

The Company is taking several actions to strengthen its balance sheet and liquidity in early 2010:

Commenting on these actions, Elsenhans said, “All of these initiatives, along with our continued focus on cost reduction, serve to strengthen the balance sheet and will enable us to maintain our financial flexibility and grow our non-refining businesses as we manage through this refining down cycle.”

Sunoco’s Board of Directors today declared a cash dividend for the first quarter of 2010 of $0.15 per share and the Company’s management believes that Sunoco’s current dividend level is sustainable under current conditions.

DETAILS OF FOURTH QUARTER RESULTS

REFINING AND SUPPLY- Continuing Operations

Refining and Supply had a loss from continuing operations of $135 million in the fourth quarter of 2009 versus income of $146 million in the fourth quarter of 2008. The decrease in results was due to lower realized margins and production volumes, partially offset by lower expenses. Our realized margins continued to be negatively affected by market weakness during the quarter. The overall crude utilization rate was 85 percent for the quarter, up from 74 percent in the third quarter of 2009. This increase reflects higher utilization at the Philadelphia and Marcus Hook refineries as a result of a shift of production from the Eagle Point refinery in connection with the idling of this facility in early November. First quarter production in 2010 will be impacted by planned turnarounds at both our Marcus Hook and Toledo refineries.

REFINING AND SUPPLY- Discontinued Operations

Discontinued Tulsa refining operations, which were divested on June 1, 2009, had income of $36 million in the fourth quarter of 2008.

RETAIL MARKETING

Retail Marketing earned $21 million in the current quarter versus $103 million in the fourth quarter of 2008. The decrease in earnings was primarily due to lower average retail gasoline and distillate margins, partially offset by lower expenses. Sales volumes were up slightly versus the year-ago quarter. Retail gasoline margins in the second half of 2008 benefited from the rapid decrease in wholesale prices during that period, while wholesale prices were rising during much of the second half of 2009.

CHEMICALS

Chemicals reported income of $6 million in the fourth quarter of 2009 versus a loss of $4 million in the fourth quarter of 2008. The increase in results was due primarily to lower expenses and the absence of a $12 million after-tax unfavorable lower of cost or market adjustment to Chemicals’ polypropylene inventory that was recorded in the fourth quarter of 2008. Partially offsetting these positive factors were lower margins and sales volumes.

LOGISTICS

Logistics earned $22 million in the fourth quarter of 2009 versus $29 million in the fourth quarter of 2008. The decrease in earnings was due primarily to lower results from lease crude marketing activities, partially offset by higher earnings from refined product pipeline and terminalling operations.

COKE

Coke earned $78 million in the fourth quarter of 2009 compared to $28 million in the fourth quarter of 2008. The increase in earnings was due primarily to the recognition of a one-time $41 million investment tax credit associated with the start up of the Granite City facility and $6 million of after-tax dividend income from the Brazilian cokemaking operations.

CORPORATE AND OTHER

Corporate Expenses — Corporate administrative expenses were $6 million after tax in the fourth quarter of 2009 versus $20 million after tax in the fourth quarter of 2008. Corporate expenses decreased primarily due to lower payroll and other employee-related costs.

Net Financing Expenses and Other – Net financing expenses and other were $17 million after tax in the fourth quarter of 2009 versus $5 million after tax in the fourth quarter of 2008. The increase was primarily due to higher interest expense and lower capitalized interest.

SPECIAL ITEMS

During the fourth quarter of 2009, Sunoco recorded a $21 million after-tax favorable adjustment to the gain related to the divestment of the discontinued Tulsa operations; recorded a $55 million after-tax

gain from the liquidation of LIFO inventories in connection with the shutdown of the Eagle Point refinery; and recorded a $19 million after-tax provision for costs associated with MTBE litigation as well as additional charges associated with the Eagle Point shutdown and the business improvement initiative. The total net impact of special items during the fourth quarter of 2009 is a benefit of $57 million after tax.

During the fourth quarter of 2008, Sunoco recorded an $85 million after-tax provision to write-down to estimated fair value its Tulsa refinery; recorded a $35 million after-tax provision to write down to estimated fair value its Bayport, TX polypropylene plant; and recorded a $19 million after-tax provision to write off goodwill pertaining to its polypropylene business. During the fourth quarter of 2008, Sunoco also recorded a $16 million after-tax gain related to certain income tax matters and a $14 million after-tax gain resulting from the correction of an error in the computation of a gain recorded in 2007 related to prior issuance of SXL limited partnership units to the public. The total net impact of special items during the fourth quarter of 2008 is a charge of $109 million after tax.

Sunoco, Inc., headquartered in Philadelphia, PA, is a leading manufacturer and marketer of petroleum and petrochemical products. With 675 thousand barrels per day of refining capacity, approximately 4,700 retail sites selling gasoline and convenience items, and an ownership interest in approximately 6,000 miles of crude oil and refined product pipelines and approximately 40 product terminals, Sunoco is one of the largest independent refiner-marketers in the United States. Sunoco is a significant manufacturer of petrochemicals with annual sales of approximately five billion pounds, largely chemical intermediates used to make fibers, plastics, film and resins. Utilizing a technology with several proprietary features, Sunoco’s cokemaking facilities in the United States have the nominal capacity to manufacture approximately 3.67 million tons annually of high-quality metallurgical-grade coke for use in the steel industry. Sunoco also is the operator of, and has an equity interest in, a 1.7 million tons-per-year cokemaking facility in Vitória, Brazil.

Anyone interested in obtaining further insights into the fourth quarter’s results can monitor the Company’s quarterly teleconference call, which is scheduled for 5:30 p.m. ET on February 4, 2010. It can be accessed through Sunoco’s website -www.SunocoInc.com. It is suggested that you visit the site prior to the teleconference to ensure that you have downloaded any necessary software.

Those statements made in this release that are not historical facts are forward-looking statements intended to be covered by the safe harbor provisions of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements are based upon assumptions by the Company concerning future conditions, any or all of which ultimately may prove to be inaccurate, and upon the current knowledge, beliefs and expectations of Company management. These forward-looking statements are not guarantees of future performance. The reader should not place undue reliance on these forward-looking statements, which speak only as of

the date of this press release. The Company expressly disclaims any obligation to update or alter its forward-looking statements, whether as a result of new information, future events or otherwise.

Forward-looking statements are inherently uncertain and involve significant known and unknown risks and uncertainties (many of which are beyond the control of the Company) that could cause actual results to differ materially from those discussed in this release. Those statements concerning future dividend declarations are subject to approval by the Company’s Board of Directors and will be based upon circumstances then existing.

Such risks and uncertainties include economic, business, competitive and/or regulatory factors affecting the Company’s business, as well as uncertainties related to the outcomes of pending or future litigation, legislation, or regulatory actions. Among such risks are: changes in crude oil or natural gas prices, refining, marketing and chemicals margins, or other market conditions affecting the oil and gas industry; higher-than-expected costs of, or delays in, planned development or completion of repair projects, capital projects, acquisitions, or dispositions; operational interruptions, unforeseen technical difficulties and/or changes in technical or operating conditions; general domestic and international economic and political conditions, wars and acts of terrorism or sabotage; the outcome of commercial negotiations; the actions of competitors or regulators; the competitiveness of alternate-energy sources or product substitutes; technological developments; liability resulting from pending or future litigation; significant investment or product changes and/or liability for remedial actions or assessments under existing or future environmental regulations; gains and losses related to the acquisition, disposition or impairment of assets; recapitalizations; access to, or significantly higher costs of, capital; the effects of changes in accounting rules applicable to the Company; and changes in tax, environmental and other laws and regulations applicable to the Company’s businesses. Unpredictable or unknown factors not discussed in this release also could have material adverse effects on forward-looking statements.

In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, the Company has included in its Annual Report on Form 10-K for the year ended December 31, 2008 and in its subsequent Form 10-Q and Form 8-K filings, cautionary language identifying other important factors (though not necessarily all such factors) that could cause future outcomes to differ materially from those set forth in the forward-looking statements. For more information concerning these factors, see the Company’s Securities and Exchange Commission filings, available on the Company’s website at www.SunocoInc.com.

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Sunoco, Inc.

2009 Fourth Quarter and Twelve-Month Financial Summary

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Sunoco, Inc.

Earnings Profile of Sunoco Businesses (after tax)

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Earnings Profile of Sunoco Businesses (after tax)

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Earnings Profile of Sunoco Businesses (after tax)

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