Service Manual

Consumables 4.1 Lubricating oil
22
4
General
Modern diesel engines place very high de-
mands on the lubricating oil to be used. The
specific engine performances which have in-
creased constantly over the last few years lead
to an increased thermal load on the oil and also
the oil is more exposed to contamination due to
reduced oil comsumption and longer oil
change intervals. For this reason it is necessa-
ry to observe the requirements and recommen-
dations described in this operating manual in
order not to shorten the life of the engine.
Lubricating oils always consist of a basic oil
and an additive package. The most important
tasks of a lubricating oil (e.g. wear protection,
corrosion protection, neutralisation of acids
from combustion products, prevention of coke
and soot deposits on engine parts) are assu-
med by the additives. The properties of the
basic oil are also decisive for the quality of the
product, e.g. with regard to thermal load capa-
city.
In principle, all engine oils can be mixed. Ho-
wever, mixing of engine oils should be avoided
because the worst properties of the mixture are
always dominant.
The
lubricating oil quality has a considerable
influence on the life, performance and thus
also on the costs-effectiveness of the engine. It
basically applies that: The better the lubricating
oil quality, the better these properties.
The
lubricating oil viscosity describes the
flow behaviour of the lubricating oil depending
on the temperature. The lubricating oil viscosi-
ty has no influence and effect on the lubricating
oil quality.
Synthetic lubricating oils are used increasin-
gly and have advantages. These oils have a
better temperature and oxidation stability as
well as a relatively low cold viscosity. Since
some processes relevant to the definition of
the lubricating oil change intervals are not es-
sentially dependent on the lubricating oil quali-
ty (such as the entry of soot and other
contaminations), the lubricating oil change in-
terval when using synthetic lubricating oils may
not be increased in relation to the specificati-
ons of the
(  27 ) .
Biodegradable lubricating oils may be used
in DEUTZ engines if they meet the require-
ments of this operating manual.
Quality
Lubricating oils are classified by DEUTZ accor-
ding to their performance capability and quality
class ((DQC: Deutz Quality Class). It basically
applies that: with ascending quality class (DQC
I, II, III, IV), the lubricating oils are more effi-
cient or higher quality. (The suffix (- 02 / - 05)
to the quality class designation indicates in
what year the classification was made.
Lubricating oils according to other comparable
specifications can be used as long as they
meet DEUTZ requirements. In regions in which
none of these qualities is available, please
contact your DEUTZ partner responsible.
The following lubricating oils are specified for
the engines described in this operating manu-
al.
Lubricating oil change intervals
z The intervals (  27 ) depend on:
– Oil quality
– Sulphur content in the fuel
– Type of engine application
z The lubricating oil change interval must be
halved, if at least one of the following condi-
tions apply:
– Ambient temperatures permanently be-
low -10 °C (14 °F) or oil temperature be-
low 60 °C (84 °F).
– Sulphur content in the diesel fuel of
0.5 - 1 weight %.
– Operation with bio-diesel fuel.
z If the oil change intervals for vehicle engines
are to be carried out according to operating
hours, the oil change intervals for built-in en-
gines apply.
Recommended quality class
DEUTZ DQC ACEA API
DQC-III E4-99 / E6-04
1)
1)
Please contact your DEUTZ partner
DQC-IV E4-99 / E6-04
DEUTZ lubricating oils DQC III TLX - 10W40
FE
Container Order no..
5 litre container
0101 6335
20 litre container 0101 6336
209 litre barrel 0101 6337
Tank store 0101 6338