Page 287 of 489

286 Operation
Engine compartment
Checking engine oil level with the oil 
dipstick (SL 550 only)
When checking the oil level
the vehicle must be parked on level 
ground
the vehicle must have been stationary 
for at least 5 minutes with the engine 
turned off
1Oil dipstick
2Upper mark
3Lower mark
Open the hood (page 282).
Pull out oil dipstick 1.
Wipe oil dipstick 1 clean.
Fully insert oil dipstick 1 into the dip-
stick guide tube.
Pull out oil dipstick 1 again after ap-
proximately 3 seconds to obtain accu-
rate reading.
The oil level is correct when it is be-
tween lower mark 3 (min.) and upper 
mark 2 (max.) of the oil dipstick.
If necessary, add engine 
oil (
page 286).
For more information on engine oil, see 
“Technical data” section (
page 457) and 
(
page 460).
For information on messages in the multi-
function display concerning engine oil, see 
the “Practical hints” section (
page 388).Adding engine oil
iIn vehicles without an oil dipstick, the engine 
oil level is measured via the control 
system (
page 284).
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 fil-
ters, refer to the Factory Approved Service 
Products pamphlet (USA only) in your vehicle 
literature portfolio, or contact an authorized 
Mercedes-Benz 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 340 of 489

339 Operation
Vehicle care
Plastic and rubber parts
Use a gentle dishwashing detergent or 
mild detergent for delicate fabrics as a 
washing solution.
Wipe with a cloth moistened in a luke-
warm solution.
The surface may temporarily change 
color. If this is the case, wait for it to 
dry.Hard plastic trim items
Use Mercedes-Benz approved Interior 
Care, a soft, lint-free cloth and apply 
with light pressure.
Steering wheel and gear selector lever
Wipe with a damp cloth and dry 
thoroughly or clean with 
Mercedes-Benz approved Leather 
Care.
Carpets
Use Mercedes-Benz approved 
Carpet and Fabric Care for cleaning 
the carpets.
!The vehicle should not be parked for an 
extended period of time immediately after it has 
been cleaned, especially not after the wheel rims 
have been cleaned with wheel rim cleaner. 
Wheel rim cleaners can lead to increased corro-
sion of the brake disks and brake pads. 
Non-approved wheel cleaners may also damage 
the wheel paint if the car is not driven after 
cleaning. Therefore, the vehicle’s brake system 
should always be warmed-up before it is parked 
after cleaning. To do so, please drive your vehicle 
for several minutes to allow the brakes to dry.
When applying Mercedes-Benz approved Tire 
Care and Mercedes-Benz approved Wheel Care 
products, take care not to spray them on the 
brake disks. Warning!G
Do not use cleaners containing solvents or 
cockpit care sprays to clean the cockpit or 
the steering wheel. Cleaners containing sol-
vents will make the surface porous and vehi-
cle occupants could suffer serious injuries 
from plastic parts coming loose in the event 
of air bag deployment.
!Do not use oil, wax or scouring agents on 
these parts. 
Never apply strong force and only use a soft, 
non-scratching cloth when cleaning the surface. 
Do not attempt to wipe the surface with a dry 
cloth or sponge.
Otherwise you may scratch or damage the 
surface.
!Never apply strong force and only use a soft, 
non-scratching cloth when cleaning the surface. 
Do not attempt to wipe the surface with a dry 
cloth or sponge.
Otherwise you may scratch or damage the 
surface. 
     
        
        Page 461 of 489

460 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 Center.Engine oil additives
Air conditioning refrigerant
R-134a (HFC) refrigerant and special 
PAG lubricating oil are used in the air con-
ditioner system.
Brake fluid
Only brake fluid approved by 
Mercedes-Benz is recommended. Any 
authorized Mercedes-Benz Center will 
provide you with additional information.
!Using engine oils and oil filters of specifica-
tion other than those expressly required for the 
Maintenance System or changing 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 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.
Warning!G
During vehicle operation, the boiling point of 
the brake fluid is continuously reduced 
through the absorption of moisture from the 
atmosphere. Under extremely strenuous 
operating conditions, this moisture content 
can lead to the formation of bubbles in the 
system, thus reducing the system’s 
efficiency.
Therefore, the brake fluid must be replaced 
regularly. Refer to your vehicle’s 
Maintenance Booklet for replacement 
interval.