Part No. 2792


Formulated for heavy-duty diesel engines.

Penray 2792 is an advanced “fully-formulated” inhibitor package featuring a low-silicate, phosphate-free formula to provide trouble-free service in trucks, buses and additional applications listed below.

Antifreeze/coolant made with glycol consistent with ASTM E1177-14 and Penray 2792 is compatible with CAT EC-1 and other specifications listed below. Penray 2792 offers easy, economical, efficient blending procedures. A concentrated formula, Penray 2792 is added to pure ethylene glycol at 2.2% volume to achieve the product specifications and benefits. Adding an additional 2% of water is optional to minimize product cost. The finished product will meet ASTM heavy-duty specifications and may also be used in diesel engines with traditional supplemental coolant additive.

Store above 50°F (10°C) to prevent gelling.

Blending Instructions:
50/50 Pre-dilute coolant contains 1.1% by volume of 2792
Concentrate Contains 2.2% by volume of 2792

Many heavy-duty applications BENEFITS

  • Cost effective alternative to ELC
  • Single system technology offers the easiest method of manufacturing
  • Phosphate & amine free
  • Lubricity agents extend water pump life
  • Fill-for-Life® program when used with Penray Need Release® filter
  • Meets OEM performance specifications


  • Gen-sets
  • Stationary engines
  • Line heaters
  • Natural gas compressor engines
  • Irrigation equipment
  • Air compressor engines
  • Drilling equipment


  • ASTM D-6210
  • ASTM D-3306
  • TMC RP-323

Using and maintaining a properly formulated coolant is one of the most important aspects of engine maintenance.


This product can expose you to chemicals including Methanol, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to