Doosan DX60R Shop Manual page 382

Only use the engine coolant specified. Other engine
coolants may affect warranty coverage, cause an internal
buildup of rust and scale and / or shorten engine life.
Prevent dirt and debris from contaminating the engine
coolant. Carefully
surrounding area before you remove the cap.
NEVER mix different types of engine coolants. This may
adversely affect the properties of the engine coolant.
If the engine coolant pump must be replaced, replace the
engine coolant pump as an assembly only. Do not attempt
to repair the engine coolant pump or replace individual
components.
Use a new special O-ring between the engine coolant pump
and the joint. Be sure to use the special O-ring for each
engine model. Although the O-ring dimensions are the
same as a commercially available O-ring, the material is
different.
Engine
Page 202
CAUTION
clean the radiator
CAUTION
CAUTION
cap and the
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