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D-1280X is an ester-based fuel additive that is claimed to substantially reduce engine exhaust emissions, increase fuel economy and engine power, and safely clean engine fuel systems. Omstar D-1280XTM is manufactured and marketed by Omstar Environmental Products in Wilmington, California and is appropriate for use in both diesel and gasoline engines. Two related products are: Omstar B-15 formulated for bunker fuel, and Omstar 2C50X formulated for two-stroke gasoline and diesel engines.

D-1280X derives its name from the optimal mixture of 1 part D-1280X to 1280 parts fuel, which neatly translates to one ounce of D-1280X per ten gallons of fuel.

History
In 1944 U.S. Army chemist Dr. Morton Z. Fainman invented an ester-based fuel conditioner to enable Allied military vehicles in Europe and Asia to operate using methanol when gasoline and diesel sources ran low. During the next few decades Dr. Fainman refined his formula into a marketable fuel additive named D-1280, primarily for diesel but also effective in gasoline. In 1985 Dr. Fainman teamed with businessman Richard Skaggs and retired U.S. Army Colonel Howard Sargent in order to market a reformulated version of D-1280 named D-1280X under the company name Omstar. Following a successful two-year test of the product on LAX shuttle buses[2][3] under the auspices of then Los Angeles Mayor Tom Bradley and Councilman Richard Alatorre, Dr Fainman was granted a patent for D-1280X in 1990 (U.S. Patent #4,920,691)[1].

Omstar D-1280XTM is currently sold through distributors and retailers in Asia and the Americas, and is also privately labeled in the U.S. under the brand names Gamma 88 and Fuel Wize Go FartherTM.

Chemical composition
“D-1280X consists essentially of a mixture of a low molecular weight straight chain carboxylic acid ester and a high molecular weight straight chain carboxylic acid ester.”[1][2]

The low molecular weight esters remove the dirty deposits formed by fuels and the incomplete combustion process.[1]

The high molecular weight esters embed themselves with iron molecules on metal-rubbing surfaces inside cylinders, fuel pump, and fuel injectors. These esters lubricate the engine surfaces as the fuel flows through the engine.[1]

“The mixture of high and low molecular weight esters are added to an oil-base carrier. The carrier also aids in lubrication in that it is believed that it becomes more viscous and firmly bound to the metal surface by means of the ‘iron-soap’, thereby reducing engine temperature and improving fuel economy.”[1]

Independent testing
American President Lines Eleven diesel tractors operated by American President Lines were subjected to a six-month evaluation of exhaust emissions by California Environmental Engineering (an EPA-approved lab). It was found that the addition of Omstar D-1280XTM reduced "slow idle to maximum throttle" overall emissions by 33.5%, "fast idle to maximum throttle" overall emissions by 50.3%, and Generator Set overall emissions by 51%.[3]

City of Los Angeles Department of Airports In 1988 the City of Los Angeles Department of Airports requested California Environmental Engineering (an EPA-approved lab) to conduct a test measuring the effect of Omstar D-1280XTM on exhaust smoke opacity in 30 Airport diesel-powered shuttle buses operated by Hudson General Corporation. An initial test conducted in accordance to the New Jersey State Department of Environmental Protection Smoke Opacity testing procedure 7:27B-4.4[4] yielded a combined overall average of 53.24% reduction in smoke opacity from baseline across all 30 buses resulting from the usage of Omstar D-1280XTM.[5]

A four-year test was then conducted by California Environmental Engineering from 1988 to 1992, again with 30 diesel-powered shuttle buses operated by Hudson General Corporation with the finding that Omstar D-1280XTM reduced exhaust opacity by a combined overall average of 76% from baseline across all 30 buses after four years of use.[6]

Port of Los Angeles The Port of Los Angeles requested that California Environmental Engineering (an EPA-approved lab) conduct smoke opacity tests on an auxiliary diesel engine aboard the motor vessel Condor. The result was a 55% reduction in stabilized load exhaust opacity by using Omstar D-1280XTM.[7][8]

California Air Resources Board (ARB) In 1987-1988 ARB conducted a preliminary test of Omstar D-1280XTM on a diesel passenger car and a diesel light truck, both fueled with high-sulfur “certification fuel”. The results indicated a 32% reduction in unburned hydrocarbons and 26% reduction in particulate emissions[9].

A long-term test was then conducted using eight heavy-duty diesel vehicles during 1988-1989. The result of the second phase test was an overall combined 36.6% reduction in hydrocarbon emissions (significant at >95% confidence level), a 10.1% reduction in carbon dioxide (significant at >90% confidence level), and a 4.1% increase in fuel efficiency (significant at >90% confidence level).[9][10][11]

Although the testing was concluded and recorded by June 1990, the results were not made public by ARB until November 2004.[12]

U.S. Marine Corps The U.S. Marine Corps at Camp Pendleton, California conducted a one-month test of four 10 to 15 ton tractors to determine the effect of Omstar D-1280XTM on fuel efficiency. The result was a 22.76% increase of overall combined fuel efficiency across all four tractors.[13]