LD/HD Extended Service Interval HOAT

High-performance 50/50 pre-diluted antifreeze/coolant for domestic and foreign cars, light duty trucks, and heavy duty diesel applications requiring a hybrid organic acid technology (HOAT) type antifreeze/coolant.


  • ASTM D3306
  • ASTM D6210
  • TMC RP 329
  • Fully formulated for heavy duty diesel applications and does not require the addition of SCA at initial fill. Contains industry-recommended concentration of nitrite to protect cylinder liners from cavitation corrosion (liner pitting)
  • Prevents corrosion of aluminum, brass, cast iron, copper, solder and steel
  • Provides excellent high-temperature aluminum protection
  • Compatible with elastomers, gaskets, and other non-metallics
  • Low silicate, amine and phosphate free
  • Blended using de-ionized water
  • Compatible with other conventional/inorganic additive technology (IAT), hybrid organic acid technology (HOAT), and SCAs (liquid and/or filters)
  • Contains a bittering agent

Recommended for cars/light duty trucks (3 years/60K miles) and heavy duty diesels (60K miles or 3 years/300K miles) with ongoing monitoring using nitrite test strips and Supplemental Coolant Additive (SCA).

  • 55G Drums
  • Bulk