SECTION 5 – MAINTENANCE SCHEDULE AND SERVICE PROCEDURES
Service Procedures (cont.)
COOLANT FREEZE POINT
Service Interval: 24,000 km (15,000 miles), 6 months, or 550
hours
ELC 50/50 Premix provides freeze protection to -36 °C (-34 °F)
and maximum corrosion protection. If a customer wishes to use
a conventional (non-OAT ELC) coolant, it should minimally meet
ASTM D6210, Standard Specification fo r fully - For mulated
Glycol Base Engine Coolant for Heavy Duty Engines. ELC
50/50 Premix is used to replenish coolant loss and ensure that
glycol/water concentrations stay in balance.
ELC 50/50 Extender is added at the designated service interval.
Freeze Point Protection Levels Concentrate (ethylene
glycol) and Water Mixtures
Concentrate and Water
Mixtures
Freeze Point Protection
40% Concentrate and 60%
water
-24.4 °C (-12 °F)
50% Concentrate and 50%
water
-36.7 °C (-34 °F)
60% Concentrate and 40%
water
-52.0 °C (-62 °F)
67% Concentrate and 33%
water
-70.6 °C (-95 °F)
For vehicles operating in extremely cold climates, a coolant
mixture of 60% Concentrate and 40% water or 67% Concentrate
and 33% water provide additional freeze protection as shown in
the table above. Mixtures having more than 67% Concentrate
are not recommended due to the risk of additive fallout.
Check freeze point with a refractometer.
1. Put drop of coolant on refractometer window.
2. Look through eyepiece and focus.
3. Record freeze point.
4. Adjust coolant concentration as necessary to achieve
desired freeze p oint protection.
FUEL FILTER
Service Interval: 43,300 km (30,000 miles), 12 months, 1,100
hours or 1 5898 liters (4200 gallons ) o f fuel
NOTE: Change fuel filter, if optional fuel filter lamp is illuminated.
NOTE: If fuel used has more than average impurities, shorter
service intervals may be required.
Form No. 1172040R1
Printed in the United States of America Page 79
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