Navistar WorkStar Series, Operator'S Manual

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Operation
WARNING
Do not exceed the pressure rating on the
deaeration tank cap. Ensure that the pressure
rating of the deaeration tank cap matches that
listed on the side of the tank, or the tank may
burst, causing property damage, personal injury,
or death.
CAUTION
If the coolant should get extremely low and
the engine very hot, let the engine cool for
approximately 15 minutes before adding coolant;
then, with the engine running, add coolant slowly.
Adding cold coolant to a hot engine may crack
the cylinder head or cylinder block. Never use
water alone.
Antifreeze
The cooling system of your new vehicle is filled at the factory
with either a Type II Fully-Formulated (purple) or Type III ELC -
Extended Life Coolant (red). The type of coolant depends upon
the engine manufacturer and the preference of the purchaser if
optional coolants are allowed.
The Type II coolant must meet Type ll specs, such as the
Fleetrite® Premium 50/50 with SCA (P/N ZJJSCA5550). The
Type III coolant must meet Type IlI specs, such as the Shell
Rotella® ELC - Extended Life Coolant (P/N 94042). Refer to
the label on the deaeration tank to determine the coolant type.
Consult the Engine Operation and Maintenance Manual for
coolant service life details.
For vehicles with MaxxForce® 11 and 13 engines, the cooling
system of your new vehicle will be filled at the factory with
nitrite-free Shell Rotella® Ultra ELC (YELLOW) coolant.
International Truck 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.
Engine Oil
For maximum fuel economy and engine protection, keep oil
level between the ADD and FULL marks on the dipstick. Never
operate an engine with oil level above the FULL mark or below
the ADD mark.
When checking the oil level, the dipstick must be withdrawn and
wiped clean, then inserted all the way in and again withdrawn for
a true check.
To obtain an accurate engine oil level reading the vehicle must
be parked on a level surface with the engine off for at least five
minutes before checking the oil level. This will ensure the oil
is level in the oil pan, and the circulated oil has had a chance to
return to the pan. It is not necessary for the oil to be hot to obtain
an accurate reading.
Use only recommended viscosity engine oil. Refer to the Engine
Operation and Maintenance Manual for engine oil specifications.
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