Unbreakable -45°C Protection
TERZO Coolant Type D Fully Organic Long-Lasting Antifreeze redefines extreme-weather engine protection. Engineered with OAT technology (Organic Acid Technology), this heavy-duty coolant delivers unparalleled year-round protection for gasoline and diesel engines, safeguarding critical components from -45°C freezes to 129°C overheating.
Why OAT Technology Matters
Unlike conventional silicated coolants, TERZO’s phosphate-free formula uses carboxylate inhibitors to form microscopic protective layers on metal surfaces. This:
1.Prevents corrosion in aluminum radiators and magnesium alloy engine blocks
2.Eliminates silicate gel formation clogging coolant passages
3.Extends drain intervals to 600,000 km/5 years
Extreme-Climate Performance
Validated in Siberian mining fleets and Saudi desert fleets, Coolant Type D:
Maintains optimal viscosity at **-45°C freeze point**
Boils 38°C higher than water (129°C vs. 100°C)
Reduces electrolytic corrosion by 76% (ASTM D4340)
See Extreme Test Data →
Guaranteed cold starts in -45°C environments
Sustainability Built In
TERZO’s ethylene glycol base synergizes with recyclable additives to:
1. Reduce coolant waste by 60% vs. traditional IAT formulas
2. Meet EU REACH/China GB 29743 eco-toxicity standards
3. Extend service life with stabilized pH balance (8.5–9.5)
Compatibility & Applications
Certified for:
Heavy-duty diesels (Cummins ISX, Volvo D13)
Hybrid/electric battery thermal management
Passenger vehicles with magnesium-alloy blocks
Never mix with propylene glycol or silicated coolants
Upgrade to Uncompromised Protection
Get Coolant Type D Spec Sheet →
Find Bulk Distributors →
Need fleet pricing? Contact TERZO Engineers →
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