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Poly Ultra Plus (OAT) Antifreeze / Coolant

Poly Ultra Plus Coolant 55 Gallon DrumThe IRSI POLY ULTRA PLUS (Organic Acid Technology) was developed to fulfill the needs of a non-nitrite, non-amine, non-phosphate, (NAPS free) non-silicate type chemistry. IRSI POLY ULTRA PLUS depletes much slower than conventional type chemistries. All USA Heavy Duty OEM engine manufacturers except for CAT™ have moved to this type of technology as their preferred coolant. In addition, some automotive engine OEM’s manufacturers have also elected to have a NAPS free type of chemistry in their coolant line making it a good mixed fleet product.

Poly Ultra Plus Antifreeze

IRSI POLY ULTRA PLUS can be used in a drain and fill option and will offer a recommended change interval (if properly maintained) of 750,000 miles, without using an extender! IRSI POLY ULTRA PLUS can be used in Automobile, Heavy Duty Engines, over the road trucks as well as other types of construction equipment like excavators, dozers and cranes, to mention a few. It is compatible with gaskets, elastomers and other engine cooling system components all while meeting D-3306 and D6210. This product is ‘ready-to-use’. Do not add water or other ingredients.

Safety Data Sheet


When IRSI POLY ULTRA is used as directed it will provide satisfactory performance in most cars and trucks including but not limited to the following:

  • Mack Trucks
  • Volvo Trucks
  • Cummins
  • Caterpillar (EC-1)
  • GM
  • Honda
  • Mercedes
  • Kia
  • BMW
  • CNH
  • Freightliner
  • GMC Truck
  • Ford
  • Fiat
  • Porsche
  • Audi
  • Thermo-King
  • Kenworth
  • GMC Dex-Cool
  • Chrysler
  • Volvo
  • Hyundai
  • Lexus
  • Subaru
  • Jeep
  • International
  • Peterbilt
  • Detroit Diesel (93K217)
  • U S Military CID A-A-52624-A
  • Toyota
  • Nissan
  • VW
  • Saturn

Poly Ultra “Plus” Antifreeze Colors:


Gold AntifreezeRed AntifreezeBlue Antifreeze

American Society for Testing and Materials NORA - An Association of Responsible Recyclers Focus on the Family Neighborhood Christian Clinic Reuse and Recycle Fulfleet Antifreeze