Cooling System; Cooling System Maintenance - Peterbilt 348 2017 Operator's Manual

COOLING SYSTEM

COOLING SYSTEM
Cooling system
maintenance
Your engine's cooling system is
standard with Extended Life Coolant
(ELC). ELC consists of a mixture of
ethylene glycol, water, and organic
acid technology chemical inhibitors.
ELC prevents corrosion and scale
formation as well as provides freezing
and boiling point protection.
5
5-80
CAUTION
The engine cooling system has very
specific maintenance and inspection
requirements. Failure to follow re-
quirements can damage the engine.
Engine damage can include but is
not limited to:
• Freezing
• Boiling
• Corrosion
• Pitted cylinder liners
This information is found in the en-
gine manufacturers owner's manual.
It is the owner's responsibility to fol-
low all requirements listed in the en-
gine manufacturers owner's manual.
Y53-6060-1C1
What To Check In An ELC-filled
Cooling System
ELC Concentration
Check the level of freeze/boilover
protection, which is determined by
the ELC concentration. Use a glycol
refractometer to determine glycol level.
Add ELC to obtain the ELC to water
ratio required to provide the protection
you need. Use the chart below to help
determine how much ELC you need
to add.
NOTE
Maximum recommended ELC con-
centration is 60% ELC and 40% wa-
ter by volume (a 60/40 coolant mix-
ture). The minimum recommended
concentration is 40%.
In an ELC-filled cooling system, the
freeze point should be maintained
between -30° F and -45° F (-34° C and
-43° C).
(03/17)