The Fuel Ox® Fleet Trial Shows Double-Digit Fuel Economy Gains in Unique Independent UK Study

Industrial Sustainability Group International LLC, the manufacturer of Fuel Ox® with Combustion Catalyst, has released the results of a unique independent 11-month fleet trial in the United Kingdom that found significant improvements in fuel efficiency and emissions-related performance among heavy-duty trucks using the fuel treatment.

The study was conducted by Tyre Renewals Ltd., based in Castle Cary, Somerset, and independently evaluated by IESG Limited. The trial followed 11 tractor-trailers operating at 40 tonnes over 164,274 kilometers of real-world driving conditions.

According to company officials, the primary inspiration behind the trial was a longstanding challenge facing commercial fleet operators, proving fuel additive performance under real-world conditions in a way that eliminates questions about changing variables.

"Before-and-after testing is the standard framework for fuel additive trials," said Rand Taylor, CEO and Co-Founder of The Fuel Ox. "Skeptics can always argue that conditions changed between a ‘before’ and an ‘after’. This trial took that argument away."

What set this trial apart was an unexpected third phase that occurred when geopolitical tensions involving Iran prompted Tyre Renewals to preserve treated fuel reserves as a precaution against potential supply disruptions. The fleet temporarily switched back to untreated roadside diesel while continuing to operate under the same conditions.

The trial began with a baseline phase during which the fleet averaged 8.33 miles per gallon across 58,947 kilometers. During the second phase, after Fuel Ox was added to bulk fuel tanks, average fuel economy increased to 9.36 mpg, representing a 12.31% improvement. Nine of the 11 vehicles recorded gains, with the strongest-performing truck improving by more than 30%.

When the fleet returned to untreated fuel, however, average fuel economy declined to 7.75 mpg, a 17.19% drop from the treated-fuel phase and lower than the original baseline.

IESG Limited, the independent evaluator, described the performance regression as strong evidence of the treatment's effectiveness, with the regression in excess of 17% when running on base fuel being a significant indicator of the treated fuel's efficiency. 

The study also found that AdBlue/DEF consumption decreased by more than 21% during the treatment period, while visible exhaust smoke was reduced by more than 80%.

For fleet operators facing rising fuel costs and increasing pressure to reduce emissions, Taylor said the most significant benefit of the findings is the potential for immediate operational savings without requiring major equipment changes.

"Fleet operators are looking for practical ways to improve efficiency and lower operating costs," explained Taylor. "The Tyre Renewals trial demonstrates measurable gains in fuel economy while also reducing DEF consumption and visible emissions."

Fuel Ox is certified to ASTM D975 and EN 590 standards, registered with the U.S. Environmental Protection Agency (EPA), and designed for use with diesel, biodiesel blends, kerosene and heavy fuel oil. The company's patented organometallic combustion catalyst technology treats fuel at a ratio of 1:10,000, meaning one gallon of product treats 10,000 gallons of fuel.

The technology traces its origins to research conducted at Bell Labs and has been used across commercial transportation, mining, marine and military applications, according to the company.

Looking ahead, the Fuel Ox says its next objective is expanding adoption among commercial fleets and encouraging operators to conduct their own performance evaluations. Officials believe the Tyre Renewals study provides a model for future independent testing programs designed to validate fuel-efficiency improvements under real-world operating conditions.

"We believe this is some of the strongest field evidence we've seen," Taylor said. "Our focus now is helping more fleet operators replicate these results and verify the benefits within their own operations."

The Fuel Ox  is headquartered in Asbury, New Jersey. For more information visit www.fuelox.com or call 1-844-8-FUELOX.



Rand Taylor is CEO and Co-Founder of Industrial Sustainability Group (ISG) dba The Fuel Ox®, a U.S.-based fuel technology company whose proprietary combustion catalyst and fuel treatment products are now active across five continents, supplying governments, top-ten global mining operators, national transportation departments, and commercial fleet operators worldwide.