Page 246 of 334
X
Insert oil dipstick 0005back into the guide
tube as far as it will go and remove it again.
If the level is between minimum mark 0026
and maximum mark 0006, the oil level is
correct.
X If the oil level has droppe dto or below
minimum mark 0026, open cap0025and add
engine oil (Y page 244).
The difference in quantity between
marks 0006and 0026is approximately
2 US quarts (2 l).
X Close the hood.
OM651 4-cylinder diesel engine:
At outside temperatures between 32 ‡
(–0 †) and 86 ‡(30 †) you can measure the
oil level whe ncold.
Measuring the engine oil when the engine is
cold is less precise than measuring when the
engine is at normal operating temperature.
When the appropriate warning is shown in the
display
X Adding engine oil (Y page 244)
Or
X Have engine oil siphoned off.
Adding engine oil G
WARNING
If engine oil comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and injury.
Make sure that engine oil is not spilled next
to the filler neck. Let the engine cool down
and thoroughly clean the engine oil off the
components before starting the engine.
! The alternator is located below the engine
oil filler neck.Ife ngine oil spills onto the
alternator, there is a dange rofalternator
damage. Be very careful when adding
engine oil. H
Environmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful
to the environment.
! Do not add too much oil. adding too much
engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off.
! Do not use any additives in the engine oil.
This could damage the engine.
X Open the hood (Y page 240).
X Unscrew and remove cap 0025.
X Add engine oil.
X Place cap 0005on the filler nec kand tighten.
Whe ndoing so, make sure that the cap
engages correctly.
X Check the oil level with the oil dipstick
(Y page 243) or on the display
(Y page 242).
X Close the hood. Coolant
G
WARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scalded by hot
coolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape.
Only check the coolant level and/or fill the
coolant if the vehicle is on a level surface and
the engine has cooled down. The coolant
temperature must be below 122 ‡ (50 †).
! Check the engine cooling and heating
system regularly for leaks.
If a large quantity of coolant is lost, have
the cause traced and rectified at a qualified
specialist workshop. 244
Engine compartmentMaintenance and care
Page 327 of 334
!
Take care not to spill any coolant on
painted surfaces. You could otherwise
damage the paintwork.
Coolant additive with corrosion/
antifreeze protection !
Use only approved antifreeze/corrosion
inhibitor that complies with MB
Specification for Service Products, Sheet
Number 325. Using other, non-approved
antifreeze/corrosion inhibitors may cause
damage to the coolant system and reduce
the engine's service life.
Coolant is a mixture of water and antifreeze/
corrosion inhibitor. It performs the following
tasks:
R corrosion protection
R antifreeze protection
R raises the boiling point
When the vehicle is first delivered, it is filled
with a coolant mixture that ensures adequate
antifreeze and corrosion protection. Coolant
must be used in the system all yearr ound to
ensure anti-corrosion protection and a raised
boiling point –even in countries with high
outside temperatures.
To prevent damage to the engine cooling
system, use only approved corrosion
inhibitor/antifreeze that comply with the
Mercedes-Benz Specifications for Service
Products. You will find information about
approved corrosio ninhibitor/antifreeze for
your vehicle in the Maintenance Booklet.
We recommend corrosion inhibitor/
antifreeze tha tmeets the requirements in MB
Specifications for Service Products Sheet
Number 325.
Check the antifreeze/corrosion inhibitor
concentration in the coolant every six
months. The percentage of corrosion inhibitor/
antifreeze additive in the engine cooling
system should:
R
be at least 50%. This way, the engine
cooling system is protected against
freezing down to approximately -35 ‡
(-37 †).
R not exceed 55% (antifreeze protection
down to -49 ‡ [-45 †]). Otherwise, heat
will not be dissipated as effectively.
If there has been coolant loss, do not refill
only with water. If the vehicle has lost coolant,
add equal parts water and corrosion
inhibitor/antifreeze additive. The water used
as part of the coolant mixture must fulfill
certain requirements; these are usually
fulfilled by drinking water. If the water quality
is not sufficient, you must treat the water.
Further information can be obtained at any
qualified specialist workshop.
Maintenance interval Service product: coolant
Product name/number
EURO Peak Coolant/Antifreeze,
OLD WORLD INDUSTRIES
MB Sheet No. 325.0
Zerex G05, The Valvoline Company
MB Sheet No. 325.0
Zerex G48, The Valvoline Company
MB Sheet No. 325.0
Glysantin G05, BASF AG
MB Sheet No. 325.0Service products and capacities
325Technical data Z
Page 328 of 334
Maintenance
interval
Initial interval: 15 years or
180000 miles
(288000 km)
18 Subsequent
intervals: 5y
ears or
90000 miles
(144000 km) 18 Capacities
Engine cooling system
Coolant
Approximately
10.75 US qt (10.0 l) Refrigerant
The air-conditioning system uses the
refrigerant R-134a. This refrigerant does not
damage the ozone layer. Product name/number Maintenance
interval Refrigerant R-134a
MB Sheet No. 361.0 —
Further information can be obtained at any
qualified specialist workshop.
Washer fluid
Important safety notes G
WARNING
Windshield washer concentrate is highly
flammable. If it comes into contact with hot
engine components or the exhaust system it
could ignite. There is a risk of fire and injury.
Make sure that no windshield washer
concentrate is spilled next to the filler neck. !
Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or
MB WinterFit .Unsuitabl ewasher fluid
could damage the plastic lenses of the
headlamps.
Observe also the safety notes in the "Service
products and capacities" section.
Mixing ratio Add windshield washe
rconcentrate to the
washer fluid all year round. Adapt the mixing
ratio to the ambient temperature.
At temperatures above freezing:
X Fill up the washer fluid reservoir with a
mixture of water and windshield washer
concentrate, e.g. Summerwash to prevent
smearing.
At temperatures below freezing:
X Fill up the washer fluid reservoir with a
mixture of water and windshield washer
concentrate, e.g. Winterwash if there is a
danger of frost.
This prevents washer fluid from freezing on
the windshield.
Capacities Windshield washer system with/without
headlam
pcleaning system Washer fluid
Approx. 6.3 US qt
(6.0 l) Vehicle data
General notes
The following section contain simportant
technical data for yourv ehicle. Your vehicle
registration documents contain vehicle-
specific and equipment-dependen ttechnical
data such as vehicle dimensions and vehicle
weights.
18 The maintenance interval with the criterion (time or distance) that comes first is applicable. 326
Vehicle dataTechnical data