Service Information: Additives for diesel fuel treatment

Fluid for fuel system treatment (Diesel)

Vehicles inactive in storage for more than 90 days and vehicles in use

This Service Information has the purpose of showing the new A550 fluid for fuel system treatment (Diesel).

The government environmental measures that alter the diesel system composition (including 5% to 7% biodiesel in its current composition), together with sulfur reduction cause a dieseldeterioration and microorganism growth.

The fluid A550 supply a multifunction treatment in all diesel/biodiesel fuel system, creating a lasting layer on the walls where the treated fuel flows.

With its usage, it is possible to: waste water on the fuel reservoir bottom, prevent corrosion, prevent diesel oxidation, stop the appearance of sludges that come from bacterial, fungi and yeast activities, which feed from the fuel.

This treatment objective is to protect the whole vehicle fuel system, from the reservoirto the injection nozzles.

Adding A550 fluid gives a treatment that lasts 6 months or 60,000 km. .It is mandatory that this procedure is respected, so that the product can act properly on the whole fuel system.

Mercedes-Benz do Brasil recommends that the fluid is used for fuel system treatment (Diesel/Biodiesel) on the following proportion: 0.5%of the fuel reservoir capacity. Example: For a fuel reservoir with 400 liters capacity, use 2 liters of fluid.

Procedure

Examine and change the fuel filter(s), in case it is clogged or on the limit of operating life;With the main tank between  (minimum) and  (maximum) of fuel, apply 0.5% of the tank'sfull capacity (If a tank has 400 liters, add 2 litters of the product). Complete the tank with the fuel so that the product and the fuel can become uniform.

Run the engine for 15 minutes, so the treatment reaches every fuel circuit.

We recommend to repeat the process every 60,000 Km or 6 months (what happens first).

Observation

Further information about the additive influence on preservation and diesel combustion efficiency, check SIMEA 2014 (Automotive Engineering International Symposium), August, 2014, number 2, volume 1 (www.proceedings.blucher.com.br/pdf/engineeringproceedings/simea2014/25.pdf).

In case the fuel system parts are damaged due to lack of regularmaintenance, adulterated and non-recommended fuel usage, or even the usageof parts that are not original, the fluid will not act on the damaged items.

In case there is a failure on the fuel system, it should be diagnosed with specifictests, as for example, the smoothness test via Star Diagnosis.

If any damage is identified on the injectors, it must be analyzed by the respective authorizedworkshops.

The fluid for fuel system treatment (Diesel) is released with the following part numbers and their respective quantity:

 A 958 986 00 37 0001 = 1 Liter

 A 958 986 00 37 0005 = 5 Liters

 A 958 986 00 37 0020 = 20 Liters

 A 958 986 00 37 0200 = 200 Liters

Some functions coming from the fluid: antibacterial, anti-mold, lubricant, antioxidant, corrosion inhibitor, detergent, anti-crystallization, fluidity agent, improves combustion, anti-foam, anti- paraffin.

Further information can be checked on the website www.mercedes-benz.com.br