User Manual

HOW-TO SECTION
Ethylene Glycol & Water Plus
SCA Inhibitor or Propylene
Glycol & Water Plus SCA
Inhibitor — These products are
available as fully form ulated,
phosphate-free, extended service
interval (ESI) coolants. They are
commercially available from Detroit
Diesel (recom m ended) and other
manufacturers as either a concentrated
antifreeze or as a pre-mixed antifreeze.
The pre-mixed antifreeze is ready for
use, while the concentrated coolant
must be mixed with water prio r to use.
Detroit D iesel Power Cool engine
coolant (part num ber 2351213 8)
is the preferred ethylene glycol
coolant. If oth er commerci a l brands
of ethylene glycol are used, they
must be equivalent to the Power Cool
(see following paragraph). Detroit
Diesel does not market a pro pylene
glycol coolant. If a propylene glycol
coolant is used, it must also meet the
requirements listed in the following
paragraph.
Fully formu lated ethylene
glycol-based, low silicate antifreeze
or coolant must meet TMC RP-329
“Type A” requirements. Fully
formulated propylene glycol-based
antifreeze or coolant must meet TMC
RP-330 “Type A” requirements. Fully
formulated antifreeze does not require
a dosage of SCA (supplemental
coolant additive) p rior to initial use.
Mixing EG or PG Antifreeze
and Water — If a concentrated
ethylene glycol (EG) or propylene
glycol (PG) antifreeze is purchased,
mix the antifreeze with water meeting
the required quality standards
listed in Table 24 and fill the cooling
system.
If a pre-dilut ed, f ull y formul ated
coolant is p urchased, simply fill
the cooling system . For best
overall performance, a coolant
consisting of 50% concentration
of antifreeze (50% antifreeze,
50% water) is recommended.An
antifreeze concentration over 67%
(67% antifreeze, 33% water) is
not recomm ended due to poor heat
transfer, reduced freeze protection
(IEG only), and p ossible silicate
dropout. An antifreeze concentration
below 33% (33% antifreeze, 67%
water) offers too little freeze and/or
corrosion protection and is not
recomm ended.
98 All information subject to change without notice. (Rev. 01/04)
DDC-SVC-MAN-0058 Copyright © 2004 DETROIT DIESEL CORPORATION