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Fuel additives

What are fuel additives and what are they for?​

Fuel additives are substances that are added to fuel to improve its properties.

They are used for various purposes:

  • increasing the octane number of gasoline,
  • reduction of sulfur content in diesel fuel,
  • reduction of carbon deposits in the engine
  • improved indicators of economical fuel consumption.

One of the most common additives is methyl terthiar butyl ether (MTBE), which is added to gasoline to increase its octane number.

Octane rating is the measure of fuel's resistance to detonation inside an engine.

The higher the octane number, the better the performance of the engine is and the lower the emissions are. This happens due to uniform and efficient fuel combustion.

Other additives: extreme pressure additives, detergents and antioxidants are added to reduce carbon formation and increase durability of parts of the propulsion system.

Added substances help remove deposits on valves, pistons, spark plugs and other mechanisms, and, as a result, engine performance is improved and fuel consumption is reduced.

In general, fuel additives are used to improve fuel quality and performance, improve economic fuel consumption and reduce emissions of harmful substances.

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