Supplemental Coolant Additives (SCA)
Supplemental Coolant Additive (SCA) Solutions- for Ethylene or Propylene Glycol-based Antifreeze Coolants
The coolant must be maintained with the proper concentration of corrosion inhibitors. As the concentration of inhibitors deplete, additional SCA must be added to the coolant as indicated by a nitrite concentration of 900 PPM, or less. If the nitrite concentration is greater than 900 PPM, do not add additional SCA. If the nitrite concentration is above 3200 PPM, the system is over-inhibited. The system should be partially drained and filled with a 50/50 mix of water and EG or PG.
Supplemental Coolant Additive (SCA) Solutions - for Water-based Coolants (Legacy Engines Only)
In warm climates where freeze protection is not required, water only with corrosion inhibitors is approved for use. Water-only systems need to be treated with the proper dosage of corrosion inhibitors. Detroit™ approved conventional SCA or OAT corrosion inhibitors must be added to the water to provide required corrosion and cavitation erosion protection.
Need-Release Coolant Filters (STANDARD LIFE COOLANT ONLY1)
Need-Release coolant filters are available for Series 50, Series 60 and pre-2016 DD series engines. Membranes in the filters release SCAs before the coolant approaches a corrosive condition, protecting the engine from corrosion. The need-release elements release the SCA charge as needed, as opposed to the maintenance SCA elements, which instantaneously release the SCA charge. Need-release coolant filter elements should be replaced after one year or 100,000 miles (160,000 km), or 3,000 operating hours, whichever comes first.
1. Need-Release filters are not to be used with ELC type coolants. Such use will cause serious damage to the engine.