Detroit Diesel 60 Series Operator's Manual page 39

Check the coolant level daily and main-
tain it near the bottom of the filler neck on
the radiator. On some installations this is
done by checking an overflow bottle or
sight glass. Add coolant as necessary,
but do not overfill. Before adding coolant,
refer to How to Select Coolant in the
How To section of this guide.
Make a daily visual check for cooling
system leaks. Look for an accumulation
of coolant when the engine is running
and when it is stopped. Coolant leaks
may be more apparent on an engine
when it is cold.
The inhibitors in antifreeze solutions
should be replenished with a non-chro-
mate corrosion inhibitor supplement
when indicated by testing the coolant.
Coolant Type
A 50/50 mix of POWER Cool fully formulated
inhibited ethylene glycol antifreeze and water or a
50/50 mix of fully formulated inhibited propylene
glycol antifreeze and water.
A 50/50 mix of phosphate-free TMC RP-329
"Type A" (Ethylene Glycol) or TMC RP-330 "Type
A" (Propylene Glycol) antifreeze and water.
A 50/50 mix of NOAT (Nitrited Organic Acid
Technology) coolant and water.
1 Proper maintenance involves periodic evaluation using Power Trac
the addition of required SCA, as indicated by the test strip.
2 To verify coolant acceptability, submit a sample to DDC for coolant analysis every 3 years, 300,000
miles,(480,000 km), or 6,000 operating hours, whichever comes first. Submit sample in Power Trac
Coolant Test Bottle, part number 23508774.
3 NOAT coolants require the addition of an extender every 300,000 miles, (480,000 km), 5,000 hours, or
2 years, whichever comes first. Use 1 pint to 20 gallons of NOAT coolant.
Table 8. Coolant Drain Intervals
Refer to How to Select Coolant for
required test intervals and inhibitor levels.
Coolant Drain Interval—Detroit
Diesel recommends replacing cool-
ant at the intervals listed in Table 9.
A coolant system properly maintained
and protected with supplemental
coolant inhibitors can be operated up to
the intervals shown below. At these
intervals the coolant must be drained,
disposes of in an environmentally
responsible manner, according to state
and/or federal EPA Refer to "Inhibitor
Test Procedures" under How to Select
Coolant and use the required supple-
mental additives or filter/conditioner ele-
ments listed in Tables 21-28 of the
Specifications Section.
Coolant Replacement Interval
With proper maintenance 1 coolant can be oper-
ated 2 years, 300,000 miles, (480,000 km),
4,000 hours, or 2 years, whichever comes first. At
this time the cooling system must be completely
drained and cleaned before refill.
With proper maintenance 1 coolant can be oper-
ated for the life of the engine until overhaul. 2 For
life to overhaul, pre-charged coolant in combina-
tion with a need-release filter must be used.
At this time the cooling system must be
completely drained and cleaned before refill.
With proper maintenance coolant can be operat-
ed 4 years, 600,000 miles, (960,000 km), or
10,000 operating hours, whichever comes first. 3
At this time the cooling system must be
completely drained and cleaned before refill.
® 3-Way Coolant Test Strips and
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