Page 360 of 569

359 Operation
Engine compartment
Wipe oil dipstick 1 clean.
Fully insert oil dipstick1 into the 
dipstick guide tube.
Pull out oil dipstick1 again after 
approximately 3 seconds to obtain 
accurate reading.
The oil level is correct when it is between 
lower mark 3 (min.) and upper mark 2 
(max.) of the oil dipstick.
If necessary, add engine oil.
For more information on engine oil, see 
“Technical data” section (
page 536) and 
(
page 538).
For information on messages in the multi-
function display concerning engine oil, see 
the “Practical hints” section (
page 451).Adding engine oil
Example illustration R 350 4MATIC
1Filler cap
Unscrew filler cap1 from filler neck.
Add engine oil as required. Be careful 
not to overfill with oil.
iThe filling quantity between the upper and 
lower marks on the oil dipstick is approximately 
2.1 US qt (2.0 l).
!Only use approved engine oils and oil filters 
required for vehicles with Maintenance System. 
For a listing of approved engine oils and oil 
filters, refer to the Factory Approved Service 
Products pamphlet (USA only) in your vehicle 
literature portfolio, or contact an authorized 
Mercedes-Benz Light Truck Center.
Using engine oils and oil filters of specification 
other than those expressly required for the 
Maintenance System, or changing of oil and oil 
filter at change intervals longer than those called 
for by the Maintenance System will result in 
engine or emission control system damage 
not covered by the Mercedes-Benz Limited 
Warranty.
 
     
        
        Page 537 of 569

536 Technical data
Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective 
lubricants must match. Therefore only use 
products tested and approved by 
Mercedes Benz.
Please refer to the Factory Approved 
Service Products pamphlet (USA only), or 
inquire at an Mercedes-Benz Light Truck 
Center.
Warning!G
Comply with all valid regulations with re-
spect to handling, storing and disposing of 
service fluids. Otherwise you could endan-
ger persons or the environment.
Keep service fluids out of the reach of chil-
dren.
For health reasons, you should prevent 
service fluids from coming into direct 
contact with your skin or clothing.
If a service fluid is swallowed, contact a 
physician immediately.
ModelCapacityFuels, coolants, lubricants, etc.
Engine with oil filterR 320 CDI 4MATIC9.0 US qt (8.5 l)Approved engine oils
R 3501, R 350 4MATIC
1USA only.
8.5 US qt (8.0 l)
R 550 4MATIC2
2Canada only.
9.5 US qt (9.0 l)
Automatic transmission9.5 US qt (9.0 l)MB Automatic Transmission Fluid
Transfer case0.53 US qt (0.5 l)MB Automatic Transmission Fluid
Rear axle1.2 US qt (1.1 l)Hypoid gear oil
Front axle1.2 US qt (1.1 l)Hypoid gear oil 
     
        
        Page 539 of 569

538 Technical data
Fuels, coolants, lubricants, etc.
Engine oils
Engine oils are specifically tested for their 
suitability in our engines and durability for 
our service intervals. Therefore, only use 
approved engine oils and oil filters 
required for vehicles with Maintenance 
System. For a listing of approved engine 
oils and oil filters, refer to the Factory 
Approved Service Products pamphlet (USA 
only), or contact an authorized 
Mercedes-Benz Light Truck Center.Engine oil additives
Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG 
lubricating oil are used in the air condition-
ing system.
ModelCapacityFuels, coolants, lubricants, etc.
Air conditioning systemR-134a refrigerant and special PAG lubricant 
oil (never R-12)
Windshield washer 
system and headlamp 
cleaning system*8.0 US qt (7.6 l)MB Windshield Washer Concentrate1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing point or MB Windshield Washer Concentrate “MB SummerFit” 
and commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 544).
!Using engine oils and oil filters of 
specification other than those expressly 
required for the Maintenance System, or chang-
ing of oil and oil filter at change intervals longer 
than those called for by the Maintenance System 
will result in engine or emission control system 
damage not covered by the Mercedes-Benz 
Limited Warranty.
Please follow Maintenance System recommen-
dations for scheduled oil changes. Failure to do 
so will result in engine or emission control 
system damage not covered by the 
Mercedes-Benz Limited Warranty.
!Do not blend oil additives with engine oil. 
They may damage the engine.
Damage or malfunctions resulting from blending 
oil additives are not covered by the 
Mercedes-Benz Limited Warranty.
!Never use R-12 (CFC) or mineral-based 
lubricating oil. Otherwise damage to the system 
will occur. 
     
        
        Page 552 of 569

551 Index
Engine coolant see Coolant
Engine oil 358, 538
Adding 359, 538
Additives 538
Changing 359, 538
Checking level 358
Consumption 358
Filler neck 359
Recommended engine oils and 
filters 538
ESP
®101
Messages in the multifunction 
display 435–436
Warning lamp 27, 419
ETD 85
Safety guidelines 74
ETS/4-ETS 103
Extending cargo compartment 292
Exterior rear view mirrors 48, 203
Power folding* 204
Synchronizing 204F
Fastening the seat belts 50
Filler neck, Engine oil 359
First aid kit 467
Flat tire 492
Collapsible tire 471, 498, 532
Jacking up the vehicle 493
Lowering the vehicle 501
Mounting the spare wheel 498
Preparing the vehicle 493
Spare wheel 471, 498, 532
Floormats 335
Fluids
Automatic transmission
fluid 360, 536
Brake fluid 355, 536, 539
Capacities 536
Engine coolant 355, 360, 537, 541
Engine oil 358, 536, 538
Power steering fluid 536
Windshield washer and headlamp 
cleaning* system 362, 538Fog lamp, Front see Corner-illuminating 
front fog lamps*
Fog lamp, Rear 147
Messages in the multifunction 
display 458
Replacing bulbs 480
Fog lamps 146
4MATIC see Permanent four-wheel 
drive 281
Front air bags 75
Front defroster 214, 229
Front lamps see Headlamps
Front passenger front
air bag 75, 77, 82, 425
Front passenger front air bag
off indicator lamp 31, 75, 77, 82, 425
Front seat head restraints see
Head restraints
Front towing eye 515