Doosan DX60R Shop Manual page 200

Observe the following environmental operating conditions
to maintain engine performance and avoid premature
engine wear:
The standard range of ambient temperatures for the normal
operation of 4TNV98-E engines is from +5°F (-15C°) to
+113°F (+45°C).
If the ambient temperature exceeds +113°F (+45°C) the
engine may overheat and cause the engine oil to break
down.
If the ambient temperature is below +5°F (-15°C) the engine
will be hard to start and the engine oil may not flow easily.
Contact your authorized DOOSAN dealer or distributor if
the engine will be operated outside of this standard
temperature range.
The illustrations and descriptions of optional equipment in
this manual, such as the operator's console, are for a
typical engine installation. Refer to the documentation
supplied by the optional equipment manufacturer for
specific operation and maintenance instructions.
If any indicator illuminates during engine operation, stop
the engine immediately. Determine the cause and repair the
problem before you continue to operate the engine.
Only use the engine oil specified. Other engine oils may
affect warranty coverage,
components to seize and / or shorten engine life.
Prevent dirt and debris from contaminating the engine oil.
Carefully clean the oil cap / dipstick and the surrounding
area before you remove the cap.
Never mix different types of engine oil. This may adversely
affect the lubricating properties of the engine oil.
Never overfill. Overfilling may result in white exhaust
smoke, engine overspeed or internal damage.
Engine
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CAUTION
CAUTION
CAUTION
CAUTION
cause internal
MEMO
engine
SP001693