Shifting Up To Higher Octane

According to a recent analysis by MIT researchers, if the majority of light-duty vehicles in the United States ran on higher-octane gasoline, the automotive industry as a whole would reduce its carbon dioxide emissions by 35 million tons per year, saving up to $6 billion in fuel costs.

Market analysis also shows from a global view, that the octane number of commercial gasoline is at or below the lower end of the acceptable range in many countries.

Since wider use of premium gas could save fuel, money and also help the environment, refineries have tried to use new processes and catalysts to improve gasoline octane number, but still cannot fully satisfy the consumers’ requirements. An additive solution is the only option left.

Toxic, Harmful -- Continuous Attempts Without Success

The first widely used octane additive was tetraethyl lead. Since TEL has been phased out in gasoline by the United States Environmental Protection Agency (EPA) in 1973, new fuel additives were sought. TEL has been, and still is, used in certain countries as an additive to increase the octane rating of automotive gasoline.

As a replacement to TEL, a less-toxic substitute, MMT (Methylcyclopentadienyl manganese tricarbonyl was further developed as an octane improver in 1974. MMT has been so controversial that many oil companies voluntarily stop the use of MMT. It has been banned in certain countries due to its neurotoxicity. Automobile manufacturers also strongly oppose the use of MMT.

MTBE, another anti-knocking agent, has been used in gasoline at low levels since 1979. However, due to its contamination to groundwater and soil, in 2000 the U.S. EPA drafted plans to phase out the use of MTBE nationwide over four years. As of 2016, hundreds of lawsuits are still pending regarding MTBE contamination of public and private drinking water supplies.

There are several other alternative additives, including DMC (dimethyl carbonate), sec-Butyl acetate, Aniline, N-Methylaniline. However, these additives are either too expensive, very toxic or incompatible with engine and fuel system materials. Some of these compounds also cause serious environmental or healthy concerns and are banned in many countries.

The Invention of Otex

Cestoil has decades of professional experience in supplying fuel additives. With our customers’ requirements in our mind and after years of research work, Cestoil has developed and patented a new generation of Organic Octane Booster to meet the expectations of our clients: high performance, non-metallic, environmental friendly and cost-effective. It is fully compatible with other fuel additives and with engine and fuel system materials.

Benefit of Otex

  • Cost effective octane improvement
  • Environmental friendly
  • Compatible with engine and fuel system
  • Reduced emissions and enhanced catalyst life

Performance Data

Otex can provide a good increase to both RON and MON. Similar to other octane boosters, the response is better in lower RON gasoline. At a surprisingly low dosage of 2500ppm, it can safely increase the RON up to 1.5 points.

Performance Data II

The above data shows typical performance of Otex260 on various gasolines. Otex260 is our low pour point version of Otex200.


Our standard recommended dosing rate for Otex organic octane boosters is 1000-2500ppm.

Handling and Storage

Otex can be added either in concentrated form, or in a stock solution using a metering pump, injection system or batch addition.

Otex is compatible with other commonly used fuel additives and with engine and fuel system materials.

Observe the usual precautions for handling concentrated chemicals and blending additives into fuel.

Find out how Cestoil can improve the quality and profitability of your process. Contact us now.