Paccar MX-13, Operator'S Manual

Page: 58 / 111

Maintenance Specifications
5
fuel for the engine. Using a multigrade
oil helps improve engine cranking in
low-temperature conditions, reduces
deposit formation and increases
engine durability.
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.
5-18