Mercedes-Benz G 550 2015 Operator's Manual page 265

Engine oil viscosity
Viscosity describes the flow characteristics
of a fluid. If an engine oil has a high viscosity,
this means that it is thick; a low viscosity
means that it is thin.
Select an engine oil with an SAE classification
(viscosity) suitable for the prevailing outside
temperatures. The table shows you which
SAE classifications are to be used. The low-
temperature characteristics of engine oils
can deteriorate significantly, e.g. as a result
of aging, soot and fuel deposits. It is therefore
strongly recommended that you carry out reg-
ular oil changes using an approved engine oil
with the appropriate SAE classification.
Climate control system refrigerant
Important safety notes
The climate control system of your vehicle is
filled with refrigerant R 134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.
! Only the refrigerant R 134a and the PAG
oil approved by Mercedes-Benz may be
used. The approved PAG oil may not be
mixed with any other PAG oil that is not
approved for R-134a refrigerant. Other-
wise, the climate control system may be
damaged.
Service work, such as topping up refrigerant
or replacing components, may only be carried
out by a qualified specialist workshop. All
Service products and filling capacities
applicable regulations must be adhered to,
SAE standard J639 included.
Always have work on the climate control sys-
tem carried out at a qualified specialist work-
shop.
Refrigerant instruction label
Example: refrigerant instruction label
Warning symbol
:
Refrigerant filling capacity
;
Applicable standards
=
PAG oil part number
?
Type of refrigerant
A
Warning symbol : advises you about:
possible dangers
R
having service work carried out at a quali-
R
fied specialist workshop
Filling capacities
Missing values were not available at time of
going to print.
AMG vehicles
Refrigerant
PAG oil
All other models
Refrigerant
PAG oil
263
Capacity
Capacity
Z