oil additives MERCEDES-BENZ SLK350 2007 R171 Owner's Manual

Contents
Technical data.................................. 427
Parts service ...................................... 428
Warranty coverage ............................. 429
Loss of Service and Warranty
Information Booklet...................... 429
Identification labels............................ 430
Layout of poly-V-belt drive ................. 432
SLK 280, SLK 350 ........................ 432
SLK 55 AMG ................................. 432
Engine ................................................ 433
Rims and tires .................................... 434
Same size tires ............................. 435
Mixed size tires ............................ 437
Spare wheel with collapsible tire .. 439
Electrical system................................ 440
Main Dimensions ............................... 441
Weights .............................................. 442Fuels, coolants, lubricants, etc. ......... 443
Capacities .................................... 443
Engine oils.................................... 445
Engine oil additives ...................... 445
Air conditioning refrigerant .......... 445
Brake fluid .................................... 446
Premium unleaded gasoline ......... 446
Fuel requirements ........................ 447
Gasoline additives ........................ 447
Coolants....................................... 448
Windshield washer system and
headlamp cleaning system* ......... 450Index................................................. 451

296 Operation
Engine compartment
Engine oil
The amount of oil your engine needs will
depend on a number of factors, including
driving style. Higher oil consumption can
occur when

the vehicle is new

the vehicle is driven frequently at
higher engine speeds
Engine oil consumption checks should only
be made after the vehicle break-in period.Checking engine oil level with the
control system (SLK 55 AMG only)
When checking the oil level

the vehicle must be parked on level
ground.

with the engine at operating tempera-
ture, the vehicle must have been sta-
tionary for at least 5 minutes with the
engine turned off.

with the engine not at operating tem-
perature, the vehicle must have been
stationary for at least 30 minutes with
the engine turned off.To check the engine oil level via the
multifunction display, do the following:
Switch on the ignition (page 37).
The standard display appears in the
multifunction display (
page 127).
Press buttonk orj on the mul-
tifunction steering wheel repeatedly
until the following message appears in
the multifunction display (
page 122):
!Do not use any special lubricant additives,
as these may damage the drive assemblies.
Using special additives not approved by
Mercedes-Benz may cause damage not covered
by the Mercedes-Benz Limited Warranty.
More information on this subject is available at
any authorized Mercedes-Benz Center.

445 Technical data
Fuels, coolants, lubricants, etc.
Engine oils
Engine oils are specifically tested for
their suitability in our engines and durabil-
ity for our service intervals. Therefore, only
use approved engine oils and oil filters
required for vehicles with
Maintenance System. For a listing of ap-
proved engine oils and oil filters, refer to
the Factory Approved Service Products
pamphlet (USA only), or contact an
authorized Mercedes-Benz Center.Engine oil additivesAir conditioning refrigerant
R-134a (HFC) refrigerant and special
PAG lubricating oil are used in the air con-
ditioning system.
!Using engine oils and oil filters of specifica-
tion 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.
Please follow Maintenance System recommen-
dations for scheduled oil changes. Failure to do
so will result in engine or emission control sys-
tem damage not covered by the Mercedes-Benz
Limited Warranty.
!Do not blend oil additives with engine oil.
They may damage the engine. Damage or mal-
functions 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.

447 Technical data
Fuels, coolants, lubricants, etc.
Fuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pump) must be 91 min. It is an
average of both the Research Octane
Number (RON) and the Motor Octane
Number (MON): (RON+MON)/2. This is
also known as the ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as ethanol, IPA, IBA, and TBA can
be used provided the ratio of any one of
these oxygenates to gasoline does not
exceed 10%; MTBE not to exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is
not allowed. Gasohol, which contains
10% ethanol and 90% unleaded gasoline,
can be used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz only recommends
only the use of quality gasoline containing
additives that prevent the build-up of
carbon deposits.
After an extended period of using fuels
without such additives, carbon deposits
can build up, especially on the intake
valves and in the combustion area, leading
to engine performance problems such as:

Warm-up hesitation

Unstable idle

Knocking/pinging

Misfire

Power lossIn areas where carbon deposits may be
encountered due to lack of availability of
gasolines which contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to Factory
Approved Service Products pamphlet
(USA only) or contact an authorized
Mercedes-Benz Center for a listing of
approved product(s). Follow directions on
product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary costs and
may be harmful to engine operation.
!Damage or malfunction resulting from poor
fuel quality or from blending additional fuel
additives other than those tested and approved
by us for use on Mercedes-Benz vehicles are not
covered by the Mercedes-Benz Limited
Warranty.

456 Index
E
Easy-entry/exit feature* 44, 147
Electric air pump
Inflating collapsible tire 411
Sealing tires with TIREFIT 401
Vehicle tool kit 382
Electrical system (Technical data) 440
Electronic Stability Program see ESP
®
Emergency call (911) 233
Emergency call system 262
Tele Aid* 263
Emergency operations
Automatic transmission* (Limp-Home
Mode) 167
Remote door unlock, Tele Aid* 269
Retractable hardtop 390
Selector lever*, unlocking
manually 389
Trunk lid, Releasing from the
inside 101
Unlocking/locking the vehicle 387Emergency Tensioning Device see ETD
Emission control 289
Information label 431
System warranties 10
Vacuum line routing diagram 431
Engine
Cleaning 339
Compartment 294
Malfunction indicator lamp 27, 349
Number 431
Poly-V-belt layout 432
Starting 51
Tachometer 119
Technical data 433
Turning off 61Engine oil 296, 445
Adding 299
Additives 445
Checking level (Control system) 296
Checking level (Dipstick) 298
Consumption 296
Messages in the multifunction
display 297, 372–373
ESP®84, 86
Messages in the multifunction
display 358, 359
Warning lamp 350
ETD 79
Safety guidelines 68
Warning and indicator lamps 353
Exterior lamp switch 109
Exterior lighting
Lamps 393
Replacing bulbs 393
Exterior rear view mirrors see Mirrors

465 Index
Steering wheel gearshift control one-touch
gearshifting
Automatic transmission* 163
Stolen vehicle, Recovery services
(Tele Aid*) 269
Storage compartments 32, 252
Armrest 32, 252
Between seat backrests 32, 253
Cup holder 32, 254
Door pockets 32
Glove box 32, 252
Parcel net 32, 253
Storage tray 32
Telephone* compartment 32, 252
Trunk 32
Storing tires 306
Summer opening*
Power windows 238
Retractable hardtop 244
Sun visors 170
Symbols in display 366T
Tachometer 119
Tail lamps 395
Tar stains see Vehicle care
TDMA or CDMA network phones
(Telephone*) 226
Technical data
Air conditioning refrigerant 445
Brake fluid 446
Coolants 448
Electrical system 440
Engine 433
Engine oil 445
Fuel additives 447
Fuel requirements 447
Fuels, coolants, lubricants, etc. 443
Headlamp cleaning system* 450
Main dimensions 441
Parts service 428
Premium unleaded gasoline 446
Rims and tires 434
Weights 442
Windshield washer system 450Tele Aid system* 261
Call priority 268
Initiating an emergency call 264
Remote door unlock 269
Requirements 262
Roadside Assistance 265
Stolen Vehicle Recovery
services 269
System self-check 263
Telephone* 258
Changing mobile phone cradle 261
Compartment 33, 252
GSM network phones 219
Inserting in cradle 259
Installing a different mobile phone
cradle 261
Operation 149, 193
Removing from cradle 260
Tightening torque
Wheel bolts 413