Extended Life Coolants

Extended Life Coolants (ELC) contain Organic Acid Technology (OAT), which provides corrosion protection and inhibit liner cavitation. These coolants require less maintenance over the useful life of the engine.

ELC antifreeze coolants are commercially available from Detroit™ service outlets and other manufacturers as either concentrated or pre-mixed formulations. Concentrated coolants should be mixed at 50% (50% coolant/50% water). All ELCs used must also meet DFS 93K217 specification. Detroit™ requires that these types of coolants be free of nitrite and phosphate. Detroit™ has found that ELC's containing nitrite may lead to a breakdown of the coolant and subsequent damage to the cooling system.

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.