User Manual

SERIES 50 OPERATOR'S GUIDE
Coolant Drain Interval —
Detroit Diesel recommends
replacing coolant a t the intervals
listed in Table 17.
A coolant system properly main tained
and p rotected with supplemental
coolant inhibitors can be operated
up to the intervals listed. At
these intervals the cool ant must
be drain e d and disposed of in an
environmentally responsible man ner
according to state and/or federal
(EPA) recommendations.
Coolant Type
Coolant Replacement Interval
A 50/50 mix of PowerCool® fully
formulated, inhibited ethylene
glycol antifreeze and water or
a 50/50 mix of fully formulated,
inhibited propylene glycol
antifreeze and w ater
With proper maintenance
1
coolant can be
operated 2 years, 300,000 miles (480,000
km), or 4,000 hours, whichever comes first.
At this time the cooling system must be
completely drained and cleaned before refill.
A 5 0/50 mix of phosphate-free
TMC RP-329 “Type A“
(propylene gl ycol) antifreeze
and water.
With proper maintenance
1
coolant can be
operated for the life of the engine until
overhaul.
2
For life to overhaul, pre-charged
coolant in combin ation with a need-release
filter must be used. At this time th e cooling
system must be completely drained and
cleaned before refill.
A 50/50 mix of O AT (organic
acid technology) coolant and
water.
With proper maintenance coolant can be
operated 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 an d cleaned
before refill.
1
Proper maintenance involve s periodic evaluation using PowerTrac®
3-Way Coolant Test Strips and 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 (48 0,000 km) or 6,000
operating hours, whichever comes first. Submit sample using
PowerTrac coolant analysis kit, pa r t number 23516921 (IEG/IPG
coolant) or 23523398 (organic c oolant).
3
OAT coolants require the addition of an extender every 2 years,
300,000 miles (480,000 km), or 5,000 hours, whichever comes first.
Use 1 pint to 20 gallons of OAT coolant.
Table 17 Coolant Drain Intervals
All information subject to change without notice. (Rev. 01/04) 69
DDC-SVC-MAN-0058 Copyright © 2004 DE TROIT DIESEL CORPORATION