Mercedes-Benz Zetros 2020 Operating Instructions Manual Download Page 152

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To prevent operating problems, diesel fuel with

improved flow properties is available in the

winter months.
Winter diesel fuels are reliable down to outside

temperatures of -20 † in Germany and other

Central European countries. Winter diesel fuel

can normally be used without problems at the

outside temperatures expected in the country

where it is on sale.
In very low outside temperatures, obtain infor-

mation from a filling station operator on partic-

ularly cold-resistant winter diesel.

Fatty acid methyl ester (FAME) fuel

(bio-diesel)

General notes

When using fatty acid methyl ester please

note the following points:

The fuel filter and the oil filter must be

replaced approximately

50 operating hours after switching to

FAME fatty acid methyl ester fuel.

The oil filter and fuel filter must be

replaced every time the engine oil is

changed.

Fatty acid methyl ester shortens the ser-

vice life of conventional fuel filters.

Mercedes-Benz recommends fitting a spe-

cial fuel prefilter. Information about this is

available at any qualified specialist work-

shop.

The engine oil will have to be changed

and the oil filter replaced much more fre-

quently.

Only use fatty acid methyl ester in accord-

ance with DIN EN 14214. Fatty acid

methyl ester that does not comply with

DIN EN 14214, or special additives added

to the fuel may cause malfunctions or

engine damage.

Fatty acid methyl ester corrodes painted

surfaces. For this reason, it must not be

allowed to come into contact with the

paintwork. Rinse off immediately with

water.

Only use engine oils that comply with

Sheet no. 228.5 of the Mercedes-Benz

Specifications for Service Products.

If the vehicle is not used for long periods

of time, fatty acid methyl ester can clog

fuel system components. Therefore, if the

engine is not used for long periods of

time, use up the fatty acid methyl ester

and fill up the fuel tank with conventional

diesel fuel. Before parking the vehicle, run

the engine for at least 1 hour.

The use of fatty acid methyl ester is not

recommended for vehicles which are out

of use for long periods (e.g. fire engines).

The auxiliary heating can only be operated

with commercially-available diesel fuel.

Operating with fatty acid methyl ester or a

mixture of conventional diesel fuel and

fatty acid methyl ester (>10% mixing ratio)

can lead to malfunctions and is not per-

mitted.

If the vehicle is operated with fatty acid

methyl ester or a mixture of conventional

diesel fuel and fatty acid methyl ester

(mixture with >10% fatty acid methyl

ester): an additional fuel tank is required

with pure conventional diesel fuel for the

auxiliary heating system.

Environmental note

If the vehicle runs on FAME fatty acid methyl
ester fuel, ask your disposal plant whether
you have to collect the engine oil separately.
Not all manufacturers of refined products
(lubricant manufactured from used engine
oil) can process engine oil which has been
enriched with FAME fatty acid methyl ester
fuel.
Observe the special notes and national regu-
lations when disposing of engine oils.

You can operate the vehicle on pure fatty acid

methyl ester according to DIN EN 14214 or a

mixture of conventional diesel fuel and fatty

acid methyl ester. This also applies to vehicles
with BlueTEC

exhaust gas aftertreatment.

When driving with fatty acid methyl ester:

fuel consumption is somewhat higher

engine output is reduced slightly

there is an increased production of white

smoke after a cold start

150

Operating fluids