DELO ELC Antifreeze/Coolant products are single-phase, ethylene glycol-based NOAT (Nitrited Organic  Additive Technology) products available in various dilutions that are based on patented aliphatic carboxylate corrosion inhibitor technology specifically formulated for heavy-duty cooling system applications that require nitrite. Delo ELC Antifreeze/Coolant products are heavy-duty engine coolants that use a patented organic corrosion inhibitor technology called aliphatic carboxylates. Delo  ELC is free of nitrates, borates, silicates, phosphates  and amines. These products contain nitrites and molybdates for additional cylinder liner protection. Delo ELC Antifreeze/Coolant products are recommended for use in a wide variety of cooling system applications including on-road, off-road and stationary engine applications. These products are also recommended in mixed fleet applications where heavy-duty and light-duty trucks are present. Please check your OEMs coolant recommendations. Delo ELC Antifreeze/Coolant products do not require the addition of supplemental coolant additives to obtain their service life of 1,000,000 miles / 1,600,000 km /  15,000 hours, or 8 years, when properly maintained.  Routine visual inspections, coolant top-off and annual laboratory testing are recommended to ensure maximum service life. Delo ELC Antifreeze/Coolant products have been fully tested under the CAT EC-1 specification and have been found to meet all the chemical and performance requirements of this specification.