Navistar ProStar+, Руководство по эксплуатации и обслуживанию, Страница: 239 / 304

Maintenance Instructions
8. Let engine completely cool. Recheck coolant level and
concentration / freeze point with a refractometer and top
off as needed to achieve a coolant level at the COLD
MAX line when cold.
Coolant and Optional Coolant Filter
For vehicles with MaxxForce ® 11, 13, 15, and Navistar ® N13
engines, the cooling system is filled at the factory with Nitrite-free
Shell Rotella
® Ultra ELC coolant.
For vehicles with Cummins ® ISX15 engine, the cooling system
is filled at the factory with Shell Rotella ® ELC (Red) coolant.
Navistar, Inc. recommends using only the approved coolant with
the 2010 cooling packages, and will not warrant these cooling
systems that have not utilized the recommended coolant.
The label on the deaeration tank provides additional coolant
/ antifreeze information.
Consult the Engine Operation and
Maintenance Manual for coolant service life details.
Some engines are ordered with an optional coolant filter that
should be replaced periodically.
ELC equipped vehicles use only water filters without
Supplemental Coolant Additives (SCAs) as SCAs are not
necessary with extended life coolant.
Navistar recommends
ELC due to its ease of maintenance and lower long-term cost of
operation.
Coolant Concentration Freeze Point
Cooling systems should be checked twice a year to ensure
proper coolant water concentrations. A 53/47 coolant / water
mixture from the factory provides freeze protection down to
minus -40°F (-40°C) as well as excellent corrosion protection. A
50/50 mixture can be easily created in the shop using undiluted
coolant and water, and it will provide freeze protection down
to -34°F (-36.7°C) if no further dilution is experienced during
installation.
Concentrations greater than 67% are not recommended. The
use of Shell Rotella
® Ultra ELC pre-mixed to make up for coolant
loss will ensure the glycol / water concentrations stay in balance.
CAUTION
To prevent property damage, always use Shell
Rotella
® Ultra ELC or equivalent to top-off Ultra
ELC-equipped cooling systems. Failure to do so
may result in the loss of extended life properties.
Should top-off occur with conventional coolant(s)
exceeding 10% of the total cooling system
capacity, drain and refill with Shell Rotella
® Ultra
ELC or an equivalent nitrite-free, heavy-duty ELC.
Antifreeze
For cooling system capacities, coolant part numbers, and
other information refer to
SECTION 8 — MAINTENANCE
INTERVALS AND SPECIFICATIONS of this manual.
Fan Clutch
Inspect for proper operation, secure electrical connections, and
air supply as appropriate. See the Service Manual for details.
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