MTU 4R 1000 SERIES, Operating Instructions Manual

Page: 56 / 88

Engine oils according to Sheet No. 228.51
and 228.5 have a higher quality standard and
have a favourable effect on:
R
length of oil change intervals
R
engine wear
R
fuel consumption
R
exhaust emissions
Before delivery, the engine is filled with oil in
SAE class 5W-30 (
Y
page 32).
Check the vehicle assemblies for leaks regu-
larly. If fluid loss is identified, e.g. by oil drops
on the parking area, have the cause of the
fluid loss rectified at a qualified specialist
workshop.
Scope of application
Multi-grade engine oils compliant with Sheet
No. 228.51, 228.31, 228.5 or 228.3 can be
used all year round.
Oil change
!
If you mix engine oils with differing oil
grades, the change interval for the engine
oil is reduced in comparison to mixtures of
engine oil of identical grade.
Therefore, only mix engine oils of differing
grade in exceptional circumstances. To
prevent damage to the engine, the mainte-
nance intervals must be adjusted accord-
ingly.
!
If the SAE class (viscosity) of the engine
oil used is not suitable for continually low
outside temperatures below -20 †, this
could cause engine damage.
The specified temperatures of the SAE
class always refer to freshly added oil.
Engine oil ages during driving due to soot
and fuel residue. This impairs the charac-
teristics of the engine oil, particularly at low
outside temperatures.
If the outside temperature is under -20 †,
Mercedes-Benz strongly recommends
using engine oils of SAE class 5W-30 or
0W-30.
Use only all-season oils.
Engine oil SAE classes (viscosity)
X
Select the SAE class (viscosity) of the
engine oil to suit the average outside tem-
peratures for the time of year.
Oil change intervals are dependent on the fol-
lowing:
R
the operating conditions of the vehicle
R
the grade of the engine oil used
The maximum oil change interval can only be
achieved by using engine oils of particularly
high quality in accordance with Sheet No.
228.51 and 228.5 of the Mercedes-Benz
Specifications for Service Products. The clas-
sification of oil change intervals is specified in
the Maintenance Booklet.
Adding/topping up the engine oil
!
There is a risk of damage to the catalytic
converter or to the engine if too much oil is
added. Have excess oil drained off.
When topping up, Mercedes-Benz recom-
mends that you only use engine oil of the
same grade and SAE class as the oil filled at
the last oil change.
Check the oil level before topping up the
engine oil (
Y
page 32).
Miscibility of engine oils
The benefits of high-quality engine oils are
diminished if you mix them.
54
Service products
Maintenance