ASTM D6210 and Caterpillar EC-1
specifications must be used.
Unless otherwise optioned, factory fill
coolant is an ethylene glycol, nitrited
organic acid technology (NOAT) extended
life coolant (ELC) formulation at a 50:50
coolant-to-distilled water mixture. The
factory fill exceeds ASTM D6210 and
Caterpillar EC-1 requirements. Maintaining
coolant chemistry and freeze protection is
critical to engine and cooling system
component health and longevity.
The change interval for extended-life
coolant containing nitrite and molybdate is
750,000 miles (1,200,000 km) or 12,000
hours of on-road use (8 years or 15,000
hours of off-highway use) on initial fill with
no extender added. The change interval is
1,000,000 miles (1,600,000 km)/20,000
hours/8 years with an extender addition at
500,000 miles (800,000 km)/10,000
hours/4 years.
Nitrite-Free Extended Life Coolant
Nitrite-free organic acid technology coolant
(OAT) may be used if it meets DAF 74002.
The change interval for nitrite free coolant
is 600,000 miles (1,000,000 km) or 6
years, with no extender needed. DO NOT
add coolant extender to nitrite-free coolant.
Follow the coolant supplier's drain/flush/fill/
diluting percentages when servicing a
vehicle filled with nitrite-free coolant.
Additional Recommendations:
• Antifreeze is essential for freeze,
overheat, and corrosion protection.
The use of supplemental coolant
additives (SCAs) is not
recommended for extended-life
coolants.
Recommended Extended Life
Coolant Suppliers
Authorized PACCAR Engine dealer
Safety Restraint System -
Inspection
WARNING
Failure to properly inspect and main-
tain restraint systems can lead to in-
jury or loss of life. Without periodic in-
spection and maintenance to detect
unsafe conditions, seat restraint com-
ponents can wear out or not protect
you in an accident.
MAINTENANCE - Safety Restraint System - Inspection
230 Y53-6076-1D1 (09/20)
5
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