C - Peterbilt Motors Company

New Engine Break-In Oils
PACCAR does not approve the use of
special “break-in” engine lubricating
oils for new or rebuilt PACCAR
engines. It is recommended to use
the same lubricating oil for engine
break-in that will be used during normal
operation.
Aftermarket Oil Additive Usage
PACCAR does not recommend the use
of aftermarket oil additives. Today’s
high-quality engine lubricating oils are
very sophisticated. Most oils already
contain precise amounts of additives
blended into the lubricating oil to meet
stringent performance requirements.
These oils meet performance
characteristics that conform to the
lubricant industry standards and
are sufficient protection when used
according to the recommendations.
Aftermarket lubricating oil additives are
not necessary to enhance engine oil
performance and may in some cases
reduce the oil’s capability to protect
the engine.
Maintenance Specifications
Coolant Recommendations
and Specifications
The cooling system in your vehicle
was factory filled with Extended Life
Coolant (ELC) that meets or exceeds
all ASTM D 6210 requirements.
PACCAR recommends only using a
50/50 mixture of distilled water and
ELC when cooling system service
is required. A 50/50 mixture of ELC
and distilled water will provide freeze
protection down to -34°F (- 36.7°C),
which is adequate for most locations
in North America. For extremely cold
operating conditions, a 60/40 mixture
(coolant/water ratio) can be used to
provide freeze protection down to
-62°F (-52.2°C).
Your engine is also equipped with a
Coolant Filter designed to capture
and remove harmful deposits from the
cooling system to help prolong system
life.
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