SERIES 60 ON-HIGHWAY ENGINE OPERATOR'S GUIDE EG & Water Plus SCA Inhibitor or P G & Water Plus SCA Inhibitor These products are available as fully formulated, phosphate-free, extended service interval (ESI) coolants. They are commercially available from Detroit Diesel (recommended) 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 prior to 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 19 and fill the cooling system. If a pre-diluted, fully formulated coolant is purchased, fill the cooling system. For best overall performance, a coolant consisting of 50% concentration of antifreeze (50% antifreeze, 50% water) is recommended . Detroit Diesel Power Cool engine coolant (part number 23512138) is the preferred ethylene glycol (EG) coolant. If other commercial brands of ethylene glycol are used, they must be equivalent to the Power Cool .
Detroit Diesel does not market a propylene glycol (PG) coolant. If a propylene glycol coolant is used, it must also meet the following requirements: An antifreeze concentration over 67% (67% antifreeze, 33% water) is not recommended due to poor heat transfer, reduced freeze protection (IEG only), and possible silicate dropout. An antifreeze concentration below 33% (33% antifreeze, 67% water) offers too little freeze and/or corrosion protection and is not recommended . Fully formulated ethylene glycol-based, low silicate antifreeze or coolant must meet TMC RP-329 “Type 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 prior to initial use. All information subject to change without notice. 91 DDC-SVC-MAN-0039 Copyright © 2009 DETROIT DIESEL CORPORATION