Mercedes-Benz 2005 M-Class Operator's Manual page 228

Operation
Engine compartment
i
The filling quantity between the upper
and lower marks on the oil dipstick is
approximately 2.1 US qt. (2.0 l).
If necessary, add engine oil.
For adding engine oil see ( page 226).
For more information on engine oil, see
"Technical data" section ( page 312) and
( page 314).
See the "Practical hints" section
( page 260) if the low engine oil level
warning lamp in the instrument cluster
flashes.
226
Adding engine oil
Only use approved engine oils and oil fil-
ters required for vehicles with Mainte-
nance System (U.S. vehicles) or FSS
(Canada vehicles). For a listing of approved
engine oils and oil filters, refer to the Fac-
tory Approved Service Products pamphlet
in your vehicle literature portfolio, or con-
tact an authorized Mercedes-Benz Light
Truck Center.
Using engine oils and oil filters of specifica-
tion other than those expressly required
for the Maintenance System
(U.S. vehicles) or FSS (Canada vehicles), or
changing of oil and oil filter at change inter-
vals longer than those called for by the
Maintenance System (U.S. vehicles) or
FSS (Canada Vehicles) will result in engine
damage not covered by the
Mercedes-Benz Limited Warranty.
1 Oil dipstick
2 Filler cap
Unscrew filler cap 2 from filler neck.
Add engine oil as required. Be careful
not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.