Service Products; Notes - Mercedes-Benz Unimog Operating Instructions Manual

The specification and availability of lubricants
may vary. Some lubricants are no longer avail-
able, especially for older vehicles. Further
information can be obtained from a
Mercedes-Benz Service Centre.
Brake fluid
G
WARNING
Service product can be poisonous and haz-
ardous to health. There is a risk of injury.
Observe the instructions on the respective
original container when using, storing and dis-
posing off service products. Always store ser-
vice products in the sealed original container.
Always keep service products out of the reach
of children.
G
WARNING
The brake fluid continuously absorbs mois-
ture from the air. This results in the boiling
point of the brake fluid lowering. If the boiling
point of the brake fluid is too low, vapour
pockets may form in the hydraulic clutch
actuation system when it is subjected to a
heavy thermal load. In this case, the function
of the hydraulic clutch actuation system is
restricted. There is a risk of an accident.
Have the brake fluid renewed at the prescri-
bed intervals.
! Brake fluid corrodes paint, plastic and
rubber. If brake fluid comes into contact
with paint, plastic or rubber, rinse with
water immediately.
Have the brake fluid replaced regularly at a
qualified specialist workshop. You can find
the intervals for brake fluid change in the
maintenance booklet.
Only use brake fluid approved by Mercedes-
Benz, according to MB Approval 331.0. Infor-
mation about approved brake fluid can be
obtained from a qualified specialist workshop
or at http://bevo.mercedes-benz.com.

Service products

Engine oils
Notes on engine oils
! Engine oils other than those of the quality
specified in this Operator's Manual are not
permitted.
Only use engine oils complying with Sheet No.
228.51 or 228.31 of the Mercedes-Benz
Specifications for Service Products.
Engine oils according to Sheet No. 228.51
have a higher quality standard and have a
favourable effect on:
length of oil change intervals
R
engine wear
R
fuel consumption
R
exhaust emissions
R
You can find information on the quality
i
grade, e.g. Sheet No. 228.51, and the vis-
cosity, e.g. SAE class 5W-30, from the des-
ignation on the oil container.
Before delivery, an engine oil according to
Sheet No. 228.51 and SAE class 5W-30 will
be filled.
Scope of application
Multi-grade engine oils complying with Sheet
No.228.51 or 228.31 can be used all year
round. Depending on fuel quality (sulphur
content in fuel), oil change intervals must be
shortened.
Oil change
! 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.
361
Z