388 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their 
suitability in our engines. Therefore, use 
only engine oils approved by 
Mercedes-Benz. Information on approved 
products is available in the 
Factory Approved Service Products pam-
phlet, or at an 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 conditioner refrigerant
R-134a (HFC) refrigerant and special PAG 
lubricating oil are used in the air condition-
er system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the 
system will occur.
!Always check the oil filler cap 
(page 257) for  important informa-
tion pertaining to the engine oil need-
ing to meet a specific Mercedes-Benz 
specification (e.g. MB 229.5). If such 
information is printed on the oil filler 
cap, only use an engine oil from the list 
of approved engine oils in the Factory 
Approved 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