Deutz Engine With Diesel Exhaust Fluid (Def); Engine Oil; Diesel Fuel - JLG 1850SJ Service And Maintenance Manual

3.21 DEUTZ ENGINE WITH DIESEL EXHAUST FLUID
(DEF)

Engine Oil

Engines equipped with Exhaust After Treatment (EAT) systems
require the use of low-ash engine lubricating oils.
Lubricating oil that is not "low-ash" rated can contain sulphate
and oxide ashes from metal-organic additives which will sig-
nificantly shorten the life span of diesel particle filters. Phos-
phor from wear-protection additives as well as sulphur and
sulphur compounds negatively influence the catalyst activity
in exhaust gas post-treatment systems.
LOW-ASH ENGINE LUBRICATING OILS ARE RECOMMENDED FOR SCR EXHAUST
AFTER TREATMENT SYSTEMS.
USE OF NON-APPROVED LUBRICATING OIL WILL RESULT IN VOIDED WAR-
RANTY COVERAGE.

Diesel Fuel

Engines equipped with an SCR system (Selective Catalytic
Reduction) may only be operated with sulphur-free diesel
fuels (EN 590, ASTM D975 Grade 2-D S15, ASTM D975 Grade 1-
D S15 or heating oil in EN 590 quality). Otherwise compliance
with the emission requirements and durability is not guaran-
teed.
In a warranty case the customer must prove by a certificate
from the fuel supplier that a released fuel was used.
HIGH SULPHUR CONTENT IN THE FUEL
Fuels with a sulphur content > 0.5% (m/m) (5,000 mg/kg)
demand a shorter lubricating oil change interval. Fuels with a
high sulphur content may not be used in engines with exhaust
gas after-treatment. Fuels with a sulphur content > 1.0% (m/
m) are not permissible due to high corrosion and considerable
shortening of the engine life. Low-ash / low SAPS engine lubri-
cating oils (sulphate ash max. 1.0% (m/m)) may only be used in
engines without exhaust after-treatment systems if the sul-
phur content in the fuel does not exceed 50 mg/kg. However,
low-ash lubricating oils may be used in engines without
exhaust gas after-treatment systems up to sulphur contents of
500 mg/kg if the base number (TBN) is at least 9 mg KOH/g.
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SECTION 3 - CHASSIS & TURNTABLE
WINTER OPERATION WITH DIESEL FUEL
Special demands are placed on the cold behavior (tempera-
ture limit value of the filtrability) for winter operation. Suitable
fuels are available in winter.
Mixing with petrol is not permissible for safety and technical
reasons (cavitation in the injection system).
Diesel fuels up to -44 °C are available for an Arctic climate. The
addition of flow improvers to the diesel fuel is only allowed in
exceptional cases. The choice of a suitable additive and the
necessary dosing and mixing procedure must be discussed
with the fuel supplier. If only summer diesel fuel is available,
petroleum or kerosene can be added to the diesel fuel up to
30% ( V/V ) at low temperatures as shown in the diagram
below.
Figure 3-55. Mixing Petroleum With Summer Diesel Fuel
The mixing should take place in the engine tank. First pour in
the necessary amount of petroleum or kerosene, and then add
the diesel fuel.
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