Product Description

PEAK® Commercial & Industrial Heavy Duty ELC NF Extended Life Nitrite-Free Coolant/Antifreeze has been developed to meet the changing requirements of Domestic, European and Asian OEM’s.

Because nitrite from OAT HD formulations can cause aluminum corrosion in the presence of brazing residues, the latest Detroit Diesel and Mercedes-Benz (MB) engines and vehicles are currently factory-filled with nitrite-free (NF) extended life technology.

The nitrite-free formulation is based on proven carboxylate organic acid technology (OAT), and is designed for use in all diesel, gasoline and natural gas engines from light, medium, to heavy duty on-highway applications. The nitrite-free inhibitor system provides complete CAB brazed aluminum, corrosion and erosion protection while maintaining optimum heat transfer conditions for total HD engine system performance.

Features & Benefits:
  • Excellent heat transfer due to OAT technology compared to conventional silicate containing coolants
  • Year-around protection against freeze-up and boilover
  • Improved water pump seal life due to silicate-free environment, as well as protection against cavitation erosion, and corrosion wear
  • Complete corrosion protection for all engine and cooling system metals including aluminum, brass, copper, solder, steel and cast iron
  • Extended service life of up to 600,000 miles/12,000 hours or 6 years in heavy duty applications under normal operating conditions, without the use of extenders or SCAs; up to 150,000 miles or 5 years of service in light and medium duty applications* *With regular inspection and adjustment of coolant condition as needed and level as recommended by the vehicle manufacturer
  • Compatibility with other conventional and extended life antifreeze/coolants** **Dilution/mixing with non-equivalent coolants will reduce or eliminate the extended life nitrite-free properties. PEAK recommends that this product not be diluted by more than 25% with other coolant formulations (like conventional “green“or HD SCA pre-charged type)

Specifications, Applications and Product Details

  • PEAK Commercial & Industrial Heavy Duty ELC NF Coolant/Antifreeze is designed and recommended for use in:
    • On-highway heavy duty vehicles and commercial/stationary engines operated on diesel, gasoline, natural gas, propane, LPG, biofuels, or methane waste gas, where the OEM recommends a nitrite, silicate and phosphate-free coolant with no addition of extenders or SCAs
    • Mixed fleets where automobiles, light, medium, and on-highway heavy duty vehicles are being used and serviced, and the OEM recommends a nitrite, silicate, phosphate, borate, and/or amine-free product
    • European equipment where the OEM requires a phosphate, amine, and nitrite-free coolant
    • Japanese equipment where the OEM specifies silicate and nitrite-free products
    • Recreational vehicles requiring nitrite and silicate-free products