User Manual

Table Of Contents
operator's manual. Never use filters that
contain supplemental coolant additives
(SCAs) in an ELC-filled system. Consult
your engine operator's manual for
information on the coolant filter and service
procedures.
CAUTION
Use of non-genuine PACCAR coolant
filters
can cause severe engine dam-
age.
Cooling System Sealing Additives
and Soluble Oils
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1. Do not use soluble oils or sealing
additives.
CAUTION
The use of sealing additives or soluble
oils
in the cooling system can cause
damage to the engine. These additives
can plug various areas of the radiator,
EGR system and oil cooler. The plug-
ging of the cooling system can hamper
heat transfer, causing internal engine
damage. DO NOT use sealing addi-
tives or soluble oils in the cooling sys-
tem. The use of sealing additives can:
Build up in coolant low-flow
areas
Plug the radiator and oil cooler
Damage the water pump seal
Damage heat transfer surfaces
Damage seals and hoses
Corrode brass and copper
Failure to comply may result in equip-
ment or property damage.
Inspect Coolant Level
Inspect the vehicle's coolant surge tank for
proper coolant level. Add coolant if the
level in the tank is below the line marked
MIN.
MAINTENANCE - Cooling System Maintenance
degradation and could result in damage to
the cooling system and engine
components. Consult your dealer or
the coolant manufacturer’s representative
for recommended extended life coolant test
kits, test strips, and laboratory sample
procedures.
Coolant Extender
Add extended life coolant extender, if
necessary, according to the corrosion
inhibitor concentration required. DO NOT
add coolant extender to nitrite-free coolant.
Checking Coolant Level
Check the coolant level daily. When adding
coolant, avoid mixing different brands and
formulations. If the coolant is mixed with
more than 25% of a different formulation,
engine corrosion damage could occur. If
mixing exceeds 25% of total system
volume, it is recommended to flush and
refill the system completely with one type
of coolant.
Coolant Filter
Y
our engine may be equipped with a
coolant filter. It is a "blank filter" and does
not contain chemicals or time-release
additives. Replace it only with a blank filter
at the interval specified in your engine's
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