Pencool 4000 treats variety of ELCs

Penray Inc has introduced its new Pencool 4000 cooling system treatment with two distinct applications. The first application is used as a water-only extended life coolant (ELC) corrosion inhibitor for marine applications. The second application is as an additive specifically formulated for nitrite-free ELCs used in heavy-duty commercial applications.

This new blend is compatible with all ELCs, including families of Organic Acid Technology (OAT) and Nitrited Organic Acid Technology (NOAT) coolants. Pencool 4000 provides corrosion inhibiors in order to enhance and maintain effectiveness and service life of these coolants.

This formulation adds benefits to ELCs used in commercial and heavy-duty vehicles and equipment, by providing corrosion protection and extending service life of the coolant. In doing so, it increases uptime, reduces maintenance costs, and helps to extend vehicle life by reducing engine wear.

Nitrite-free Pencool 4000 provides protection to all metals typically wetted by coolant; including steel, cast iron, copper, and aluminum, as well as seals and elastomers found in cooling system hoses. It protects against rust and corrosion, extending radiator life. This product contains special additives that guard against wet sleeve liner pitting, reducing long-term maintenance costs. It also helps reduce cavitation erosion, which can compromise cooling system efficiency and cause hot spots resulting in engine damage.

Pencool 4000 is suited to over-the-road trucks and local delivery vehicles, as well as mobile off-highway (MOH) vehicles and construction equipment. It is a superior choice for marine applications that use sealed cooling systems and often operate on water-only coolant.

This product is supplied in 16-ounce bottles, as well as in five-gallon pails and 55-gallon drums.

More information can be found at

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.