Maintenance Specifications (Mercedes-Benz C-Class W203)

Types and volumes of lubricants and fluids used
Keep operating materials out of reach of children. If they enter a child's body, consult a doctor immediately.
Use materials recommended by MB, this is a condition for fulfilling warranty obligations. You can get certificates at the service station
Engine oil
Petrol models: synthetic, MB 229.1 or 229.3; ACEA A3-98; API SG or higher quality, viscosity 0W40, 5W40
Diesel models: synthetic, 5W30, CE according to API or higher quality, ACEA B3-98 or A3-98/B3-98
Volume, when replaced together with the oil filter, l
Petrol engines with the designation 111	7.0
Petrol engines with designation 271	5.5
Petrol engines with designation 112	8.0
Diesel engines	6.5
Oil volume between MAX and MIN marks on dipstick, l	2.0
Manual transmission	1.8 l, ATF-A, MB-235.10, Mobil Gear Oil MB 317
Automatic transmission	8.0 l, Dexron II (MB 001 989 21 03 10)
Brake fluid	0.5 l, DOT4+ (do not use DOT5 silicone fluid)
Differential	1.2 l, hypoid gear oil SAE85W90 MB-235.7 or "BP Energear MBE"
Steering	1 l, liquid MB-236.3 (ATF D)
Hydraulic system for adjusting body clearance	3.5 l, oil MB-244.0
Air conditioner	pAG oil, R134a refrigerant (do not use R12)
Cooling system	MB No. Q1 03 0002 or Glysantin Protect Plus/G482
Volume, when replaced, l
Petrol engines with the designation 111	8.5
Petrol engines with designation 271	7.5
Petrol engines with designation 112	10.5
Diesel engines with designation 611	11.9
Diesel engines with designation 612	12.4
Coolant composition
The proportion of antifreeze in the coolant to ensure frost resistance
up to -37°C	50%
about -45°C	55%
Constant velocity joints
Internal, gr	120 (150)
External, gr	120 (100)
Lubrication of the roof hatch panel runners	MB-A0019895051 or paste MB0019891451
Glass and headlight washer
Tank capacity, l
Models without headlight cleaner	3
Models with headlight cleaner	6
Compound	Water mixed with summer "S" (1:100) or winter "W" concentrate from MB
Add windshield washer fluid to water throughout the year to prevent streaks. Select the mixture composition according to the outside air temperature. Prepare the mixture in a separate container. Due to the presence of a windshield washer heating, the mixture concentration is sufficient to ensure frost resistance down to -10°C.
Fuel
Fuel tank, l
Capacity	62 including fuel reserve 8
Petrol models
Unleaded gasoline: not worse than AI-95/A-85. It is possible to temporarily use unleaded gasoline not worse than AI-91/A-82.5. In this case, the engine power will decrease slightly, with an increase in fuel consumption
Do not use fuel additives. They may cause increased wear or engine damage.
Diesel models
Summer and winter diesel fuel
Do not use ship's (Marine Diesel Fuel), boiler and other diesel fuel.
When using diesel fuel with a sulfur content of more than 0.5%, change the engine oil every 7,500 km.
Winter fuel ensures normal operation down to -20°C.
Thanks to the fuel preheating when the vehicle's heating system is on, a vehicle running on winter diesel fuel can, as a rule, be operated without failure at outside temperatures down to -25°C.
Do not mix gasoline with diesel fuel.
When using summer diesel fuel, as well as at outside temperatures below -15°C, a certain amount of flow improver or kerosene, depending on the outside temperature, should be added to the fuel.
Composition of the mixture
Flow improvers can also be used in combination with kerosene.
You can get information about fluidity improving agents at a Mercedes-Benz service station.
The proportion of additive, taking into account the outside air temperature, should be minimal.
The proportion of kerosene in the mixture should not exceed 50%.
Add the additive to diesel fuel until the diesel fuel loses its fluidity due to paraffin emission. Malfunctions due to paraffin emission can only be eliminated by heating the entire fuel system. Mix diesel fuel with kerosene only in the fuel tank. To do this, first pour kerosene into the tank, and then add diesel fuel. After this, the engine must run for some time so that the mixture is distributed throughout the fuel system.
Spark plugs
Type	Interelectrode gap, mm
Engines 1.8 l
Bosch F6MPP	-
Engines 2.0, 2.3 l
Bosch F7 DPP 332	1.0
NGK IFR 6D-10	0.8
Engines 2.6, 3.2 l (except 3.2AMG)
Bosch F7 DPP 332	1.0
Bosch F8 DPER	1.0
NGK IFR 6D-10	0.8
Engine 3.2AMG
Bosch F7 DPP 332	1.0
Tires and wheels
Tires
Summer//winter
195/65 R15 91H, 205/55 R16 91H, 205/55 R16 91V//
195/65 R15 91T M+S, 205/55 R16 91H M+S
195/65 R15 91H, 225/50 R16 92V, 225/45 R17 91W//
195/65 R15 91T M+S
Light alloy wheels 6J x 15 H2 ET31, 6ЅJ x 15 H2 ET37, 7J x 16 H2 ET37, 8J x 18 H2 ET44
Spare wheel
Tire
C280, C 320, C320CDI, C400CDI 165-15 8PR 89P, 165/70-16 8PR 92P
Disk	4ЅB x 15 H2 ET12
Special equipment from AMG
Front//Rear	225/45 R17 91W//245/40 R17 91W
Light alloy wheels	7SJ x 17 H2 ET37//8SJ x 17 H2 ET30 or ET34
Air pressure in front/rear tires
The required tire pressure is indicated on the plate on the inside of the fuel filler flap.
Partial loading
Summer	195/65 R15 2.1//2.3
Winter	195/65 R15 M+S 2.3//2.5
Full load
Summer	195/65 R15 2.3//2.9
Winter	195/65 R15 M+S 2.5//3.1
Tightening force of threaded connections, Nm
Tightening torques for fasteners are also given in the text of the Chapter and in some illustrations*.
*Tightening torques highlighted in bold in the text must be strictly observed; efforts not shown in bold are only approximate.
Spark plugs	28 (engine 271:25)
Glow plugs	12
Gearbox oil drain plug	60
Gearbox oil filler plug	50
Oil plug AT	20
Oil plug of the torque converter AT	16
AT pan bolts	8
Oil plug of the main gear housing	50
Tie rod end nuts	50Nm +60°
Wheel bolts	110