Fuel additives: the types of additives and their choice


Currently there are more than twenty different major categories of fuel additives, each of which consists of dozens of different compositions. The main purpose of the compositions – the improvement of the processes associated with the combustion of the fuel that reduces emissions. Some of them are introduced at the stage of fuel production, others – designed for independent use by motorists.

Types of additives.

Many of the additives contain highly toxic compounds, which are part antiknock compounds, antioxidants and promoters. Naturally, in retail stores such additives is not received and introduced into another fuel refineries. Cleaning additives for gasoline and diesel fuel producers usually do not use. Therefore, domestic motorists decide which of the commercially-available additives used and how to do it regularly.

Choice of safe additives.

Currently no fuel additives on the market is not received (it oxidizes and loses its properties). If you are “lucky” to buy low-quality gasoline, then improve it with the help of additives will not succeed. Using additives can slightly increase the octane number of the fuel, but no more than 2 units. But this applies only to those additives that contain iron and amino antidetonators. For a car are relatively safe only detergents. They are sold in small packages and in the automobile markets and serve for cleaning the fuel system of the car or the engine combustion chamber. The composition of these fuel additives include:

• demulsifiers (used for water absorption)

• Corrosion inhibitors (substances that retard oxidative reactions)

• Surfactants (cleaning agents) acting in a complex, active ingredients contribute to softening sludge and sediments which in particulate form burnt together with the fuel mixture in the cylinder.
While these contaminants will be a small amount, it will not affect the operation of the engine. If the detergents used on older vehicles in which the fuel system contains a lot of deposits and coke layer in the chamber will be significant, it can lead to clogging of the blind filters and fuel injection apparatus eventually fails.


Harmful additives.

Since the additives are currently not subject to certification, there is a risk to acquire composition, which can damage your car. These additives include agents that reduce fuel consumption (typically promised that savings of 30%). They are available in tablet form based on naphthalene, although the package is not specified. Such additives are clearly harmful to the fuel system of the car.
Most of these “miracle means” apply the method of network marketing. They are advertised mostly on the Internet. However, apart from some savings on fuel, they quickly destroy the parts of the engine and fuel system of any car.

Recommended gasoline additive.

Gasoline additives are available separately for carburetor and injection engines. For gasoline additive characterized by de-icing properties. They contain substances that bind water, which can adversely affect the working surface of the carburetor. These additives should be added every few thousand kilometers.
Universal fuel additives have wider application, cleaning the fuel system and valve. It should be noted that with the additives can be cleaned only to the intake valves of the cylinders. However, due to better combustion of the fuel mixture in the exhaust valves will be less carbon deposits formed (although they are already available and are not removed).

Additives for diesel.

During the combustion of diesel fuel, which is produced by domestic technology, formed a sufficiently large number of soot, even to a greater extent requires the use of additives.
Currently available special cleaners for diesel fuel injectors, as well as compounds that reduce the amount of soot in the exhaust gases. However, the old engine with resources expended are also of little help.
Among these diesel additives are to be directly poured into the injection system or detergents, which are entered directly into the motor.

Reagents additives.

When buying any additive necessary to pay attention to the composition. Experts to the active ingredients are as follows:

• methyl tert-butyl ether – octane increases and reduces the content of CO and CH:


• monomethylaniline – reduces detonation:


• Cleaning agents (surfactants)


To clean the fuel system additive is sufficient to fill every 5-6 complete dressings. More frequent use may adversely affect the operation of spark plugs. And the most important condition for the safe use of such funds – carefully read the manufacturer’s instructions and avoid the scam with the “miracle pills”.

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Andranik Vartanyan

Andranik Vartanyan

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