Operator`s manual

Cooling System 49
Changing from Regular to
Extended Life Coolant
Drain the system of old coolant and dispose
of properly. The cooling system should
be flushed with clean water. If significant
deposits are visible, use a reputable
commercial cooling system flush designed
for heavy duty diesel engines. For specific
information on draining and flushing, see
“Flushing Cooling System, D12D” page 96.
Note: Extended Life Coolant is not
recommended by all engine manufacturers.
Contact other manufacturers for their current
recommendations.
1
WARNING
DO NOT remove the cap to the
coolant surge tank while the engine
and radiator are still hot. Scalding
fluid and/or steam may be blown out
under pressure if the cap is taken off
too soon.
Drain the coolant into a suitable
container. Make sure the heater
temperature controls and valves are
open.
Note: Always dispose of coolant
according to Federal or local
regulations. Take all used coolant to a
recycling or waste collection center.
2 Flush the system with clean water to
remove any settled debris.
Note: Keep the water pressure low so as
not to damage the tubes of the radiator.