Gen 5 DD Platform Operators Manual ELC types of coolants should not be mixed with Standard Life Coolants. If an ELC coolant and SLC coolant are mixed, the long-life advantages of the ELC coolant will be lost. In this event, the coolant should be re-inhibited with OAT inhibitors and confirmed by analysis or else it must be maintained as an SLC coolant. Standard Life Coolants Standard Life Coolants (SLC) contains inhibitor salts, including nitrites, to prevent liner cavitation. These coolants require interval testing to maintain inhibitor concentration.
SLC antifreeze coolants are commercially available from Detroit™ service outlets and other manufacturers as either concentrated or as pre-mixed coolant. Concentrated coolants should be mixed at 50% (50% coolant/50% water). All fully formulated coolants used must also meet DFS 93K217 specification. Distilled or de-ionized water is preferred as it is absent the adverse effects caused by tap water minerals. High levels of dissolved chlorides, sulfates, magnesium, and calcium found in some tap water causes scale deposits, sludge deposits and/or corrosion. These deposits have been shown to cause component failures and poor heat transfer, resulting in overheating.
If tap water is used, the mineral content in the water must be below the maximum concentration listed in the table below. Water Requirements Table 8. Recycled Coolants Antifreeze coolants made with ethylene or propylene glycol, recycled by reverse osmosis, distillation, and ion exchange and properly re-inhibited to meet ASTM D6471 or D6472 requirements have been demonstrated to provide service equivalent to non-recycled coolants. Recycled coolants of these types are preferred. However, suppliers of these recycled glycols must provide evidence the product is free of the contaminates listed below: Acetates All information subject to change without notice.
73 DDC-SVC-MAN-0217 Copyright © 2022 DETROIT DIESEL CORPORATION Maximum Mineral Concentration in Water Minerals Maximum Concentration Parts per Million Grains per Gallon Chlorides 40 2.5 Sulfates 100 5.8 Total Dissolved Solids 340 20 Magnesium + Calcium Content 170 10