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SECTION 2 – REQUIREMENTS FOR FUEL, ENGINE OIL, AND COOLANT
Engine Oil (cont.)
OIL VISCOSITY (cont.)
oils for correct flow during starting. Higher temperatures require
higher grade oils for satisfactory lubrication.
•
A block coolant heater is required, if temperatures are below
10°F (-12°C).
•
A block coolant heater and oil pan heater are required, if
temperatures are below -10°F ( -23°C).
•
For heavy duty driving or trailer towing, higher oil grades
15W-40 and 5W-40 oils are required, if temperatures are
over 50°F (10°C).
Coolant
COOLANT MIXTURES
Engine coolant mixtures include water, glycol (ethylene or
propylene), and inhibitors. Conventional and fully formulated
coolants require regular testing of inhibitor levels to maintain
safe levels of protection.
determines levels of nitrite, nitrite / molybdate, and freeze
point protection. If necessary, Supplemental Coolant Additives
(SCAs) are added to replenish inhibitors.
Extended life coolant mixtures (water and ethylene glycol) do
not require regular testing of inhibitor levels or addition of SCAs.
See service intervals (page 63).
Testing of conventional coolant
EXTENDED LIFE COOLANT (ELC) - RED
Heavy Duty Extended Life Coolant (ELC) 50/50 Premix meeting
CEMS B-1 Type III is the standard factory fill for the cooling
system.
The coolant should minimally meet ASTM D6210,
Standard Specification for fully - Formulated Glycol Base Engine
Coolant for Heavy Duty Engines.
ELC 50/50 Extender is added at the designated service interval.
For further information see Extended Life Coolant (ELC)
Extender (page 89).
Freeze Point Protection Levels Concentrate (Ethylene
Glycol) and Water Mixtures
Concentrate and Water
Mixtures
40% Concentrate and 60%
water
50% Concentrate and 50%
water
60% Concentrate and 40%
water
67% Concentrate and 33%
water
Freeze Point Protection
-12°F (-24°C)
–34°F (37°C)
–62°F (52°C)
-95°F (-71°C)
Page 37
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