267 Operation
Vehicle care
Vehicle care
Cleaning and care of the vehicle
While in operation, even while parked, your 
vehicle is subjected to varying external 
influences which, if gone unchecked, can 
attack the paintwork as well as the under-
body and cause lasting damage.Such damage is caused not only by 
extreme and varying climatic conditions, 
but also by:
Air pollution
Road salt
Tar 
Gravel and stone chipping
To avoid paint damage, you should 
immediately remove:
Grease and oil
Fuel
Coolant
Brake fluid
Bird droppings
Insects
Tree resins, etc.
Frequent washing reduces and/or elimi-
nates the aggressiveness and potency of 
the above adverse influences.More frequent washings are necessary to 
deal with unfavorable conditions:
near the ocean
in industrial areas (smoke, exhaust 
emissions)
during winter operation
You should check your vehicle from time to 
time for stone chipping or other damage. 
A n y  d a m a g e  s h o u l d  b e  r e p a i r e d  a s  s o o n  a s  
possible to prevent corrosion.
In doing so, do not neglect the underbody 
of the vehicle. A prerequisite for a thor-
ough check is a washing of the underbody 
followed by a thorough inspection. Dam-
aged areas need to be re-undercoated.
Your vehicle has been treated at the facto-
ry with a wax-base rustproofing in the body 
cavities which will last for the lifetime of 
the vehicle. Post-production treatment is 
neither necessary nor recommended by 
Mercedes-Benz because of the possibility 
of incompatibility between materials used 
in the production process and others 
applied later.
Warning!
G
Many cleaning products can be hazardous. 
Some are poisonous, others are flammable. 
Always follow the instructions on the partic-
ular container. Always open your vehicle’s 
doors or windows when cleaning the inside.
Never use fluids or solvents that are not 
designed for cleaning your vehicle. 
352 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their 
suitability in our engines. Therefore, only 
use engine oils approved by 
Mercedes-Benz. Information on approved 
engine oils is available in the Factory 
Approved Service Products pamphlet, or at 
your authorized Mercedes-Benz Center.Please follow FSS recommendations for 
scheduled oil changes. Failure to do so 
could result in engine damage not covered 
by the Mercedes-Benz Limited Warranty.
Engine oil additives
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.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG 
lubricating oil is used in the air 
conditioning system.Never use R-12 (CFC) or mineral-based 
lubricating oil. Otherwise damage to the 
system will occur.
Brake fluid
During vehicle operation, the boiling point 
of the brake fluid is continuously reduced 
through the absorption of moisture from 
the atmosphere. Under extremely strenu-
ous 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 every two years, preferably in the 
spring.
Only brake fluid approved by 
Mercedes-Benz is recommended. Your 
authorized Mercedes-Benz Center will 
provide you with additional information.
!Always check the oil filler cap 
(page 255) for important information 
pertaining to the engine oil needing to 
meet a specific Mercedes-Benz specifi-
cation (e.g. MB 229.5). If such informa-
tion is printed on the oil filler cap, only 
use an engine oil from the list of ap-
proved engine oils in the Factory Ap-
proved Service Products pamphlet that 
meets the specification indicated on 
the oil filler cap.
Using engine oils of other specification 
may cause the FSS to incorrectly deter-
mine the next service interval and will 
result in engine damage not covered by 
the Mercedes-Benz Limited Warranty.