Frequently Asked Questions

Warranty and Damage

Will using Nx25 void my vehicles’ manufacturer’s warranty? 

A review of representative warranties from major truck engine manufacturers shows that the use of a non-OEM fuel supplement like Nx25 does not invalidate such warranties. Base engine warranties are not invalidated unless claimed failures or damages are a result from unauthorized modifications of the engine or if they are caused by the use of a non-OEM supplement. Rivotto’s Nx25 occurs below trace levels and is not known to cause any adverse effects on engines, and thus does not invalidate base engine warranties.

OEM engine warranties do not apply to accessories or additives which bear the name brand of another company, and will not warranty any non-OEM part or result to the engine determined to be caused by the non-OEM products. If a user of any non-OEM product files a warranty claim with the manufacturer for any covered warranty item on an engine or vehicle manufacturer’s warranty and the manufacturer attempts to deny that claim on account of the non-OEM product, the terms of warranties available and reviewed by Rivotto provide that the manufacturer would have to prove that the failure or damage was caused by the non-OEM product to be successful in holding their denied claim. Nx25 is not known to have ever been a suspected cause of a warranty claim on an engine or emissions system and has never been party to a denied warranty claim.

Can Nx25 harm an engine?

Our technology has never damaged an engine, nor has it ever been cited as a cause for a claim denial for a faulty engine. In fact, our technology can help avoid engine problems. Typically, unburned molecules can remain within the crankcase, building up residue on engine components and contaminating oil. Nx25 reduces pollutants resulting from combustion, which greatly reduces residue on engine components and contaminants in oil.

OEMs and Inventions

Why haven’t the big car manufacturers made products like this already?

Over the past decades, automakers have made dramatic improvements to engine performance.  

For various reasons, automakers have long neglected peripherals that improve engine efficiency, and in recent years, on account of growing social and regulatory pressures, have instead primarily focused their attention on whole engine solutions and other enhancements mandated by governments to reduce emissions, including:

  • Stop-start systems
  • More efficient catalytic converters
  • Adding electric vehicles to their product mix to meet CAFÉ laws

In addition, recently many car companies have started to de-emphasize improvements in combustion engines and to prioritize investment into electric vehicles. (GM recently merged their I.C.E. engineering team with their EV team, a clear indication of where the industry is headed.) This doesn’t mean, however, that we’ve reached the end of the road for combustion engines. For example, in 2021 the US Department of Energy published their annual vehicle technology officer report covering 2020 and estimated that combustion engines could still be made 30% more fuel efficient, and that by 2050 combustion engines would still dominate the road by a high margin.

Why haven’t we seen this in the market before?

In 99.9% of cases, inventors are not businesspeople or marketers. Inventors are brilliant people, and in many cases their brilliance in inventing doesn’t lend to business skill. Lack of business and marketing savvy is an obstacle to many technologies not successfully getting to market. There are thousands and thousands of unused technologies sitting on the shelves of academic and research institutions and in the personal libraries of inventors. Few innovations become patented, even though they may be remarkable and useful. Even among technologies that are patented, according to Forbes, fewer than 5% of patents get to market, and then among those 5%, a much smaller number are successful at scale. It takes relationships, business expertise, and capital to commercialize even the best of intentions. At Rivotto, our team of experienced business people specialize in linking arms with brilliant inventors and in taking their compelling technologies to market.

Who owns the intellectual property?

  • Nx25 is patent protected by a portfolio of highly defensible art.


Do these technologies extend engine life?

Yes. Reduced presence of residue and lower cylinder temperatures reduce stress on the engine and extend engine life.

How is performance impacted by environmental conditions?

We have intentions to test performance under different environmental conditions, including variable outside air temperatures, humidity conditions, and elevations. We anticipate normal function in a normal range of operating conditions, but do not have sufficient data to postulate about efficacy in extreme operating conditions.


How does the driver interact with the technology?

The driver will not interact with the technology. The technologies are located under the hood and function without operator input. You do not need to add water or perform any special maintenance. The exterior filter for the EPEC may become dirty from time to time when operated in dusty and other environments, but the exterior filter is easy to replace.

Does the engine cylinder temperature change?

Nx25 has shown in testing to enable slightly cooler operating temperatures, in addition to other benefits.

What fuel does Nx25 systems work with? 

Diesel, gasoline, natural gas, fuel-oil, coal and propane.

Does Nx25 involve magnets or magnetic forces? 


Fuel Consumption

Why does Nx25 reduce fuel consumption? 

Nx25 improves combustion efficiency providing a more rich radical environment during the initiation and propagation phases of combustion, and due to the additional energy yield from Nx25’s secondary reaction. As the efficiency of combustion improves, less fuel is needed for the same power output and so the accelerator is not open as long to achieve desired conditions, reducing fuel consumption.  In generators, running at a constant rpm, targeted load levels are achieved with a lower fuel requirement.   


Why does Nx25 reduce emissions?

Many emissions form during the period called ignition delay after the spark has fired (gasoline) or after fuel has been injected into the high-pressure environment (diesel). Think of ignition delay as a very brief smoldering period that occurs just prior to the charge of fuel flashing, kind of like a log in a firepit that hasn’t yet caught on fire even though a flame is present. Also, some emissions components may form after the flame has propagated, either through charge of fuel (if the flame didn’t propagate smoothly) or if the charge didn’t burn completely.

Nx25 reduce ignition delay and provide a faster cleaner burn as the flame front propagates through the charge of fuel inside the cylinder. Importantly, faster combustion moves the process closer to the ideal situation of constant volume combustion where optimum energy transfer is obtained.

How will these devices impact the emissions systems?

Nx25 causes the combustion process to produce fewer emissions, including less smoke and particulate on diesel engines.

The significantly lower levels of particulate:

  • Put less stress on DPFs
  • Extend time between regens
  • Reduce intervals between cleaning the filters
  • Allow users to enjoy much higher after-treatment efficiency

Please note that Nx25 is currently incompatible with some vehicles that use catalytic converters due to the relationship between MAF/MAP and O2 sensors that provide feedback on fuel-air mix based on O2 readings. We are currently developing solutions to overcome this challenge. Despite the fuel savings incompatibility, we are validating that CO2 reductions remain available. 

Is Nx25 registered with the EPA?



DoE VTO report
SwRI employee EV Ted Talk
Elon Musk 2021 Shareholder Meeting
Link to 2016 NREL EV pollution report
Number of vehicles in the world