Federal diesel fuel oil

Grades 1-D and 2-D are most commonly used in truck, railroad, and some stationary engines. Grade No. 4-D fuels are used in marine and certain industrial diesel applications. Fuel oil grades and their intended applications are outlined in TABLE 3-13. Federal diesel fuel oil classifications are provided in TABLE 3-14. 

In federal diesel fuel oil DF-A, cetane improver concentration cannot exceed 0.25 wt%, and in DF-1 and DF-2, cetane improver concentration cannot exceed 0.5 wt%. 

A diesel fuel stabilizer containing a blend of amines, polyamines, and alkyl ammonium alkyl phosphate as specified under MIL-S-53021 is recommended for federal diesel fuel oil. This stabilizer is to be used at a treat rate of 25 lb/1,000 barrels. It is not intended for use in routine applications, but for situations where increased stability protection is required. Typical applications include fueled equipment undergoing long-term storage in a warehouse or depot, prepositioned equipment or equipment maintained in a high-temperature environment. 

The federal diesel fuel oil specification VV-F-800D lists the following compounds as acceptable cetane improvers ... 

TABLE 3-14. Federal Specification VV-F-800 Describing Diesel Fuel Oil... 

The United States is unique among the major countries in that supply and demand has determined price structures in the petroleum industry. Today, even though the products are much better than fifty years ago, the before-tax retail prices of gasolines, diesel fuels, and heating oils are much less on a constant-value dollar basis than they ever have been before. Even with the federal and state taxes included, the retail prices on a constant-value dollar basis... 

A new development in the area of alternative diesel fuels is a fuel produced from vegetable oils and animal fats using specially modified hydrogenation processes in a conventional petroleum processing facility (Rantanen et al., 2005). This fuel retains the low sulfur and low aromatic character of biodiesel but contains no oxygen and has a heating value that is similar to petroleum diesel fuel. Recent U.S. interest in this approach has expanded due to governmental announcements that the fuel qualifies for federal excise tax credits. 

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