Penray has introduced its new Pencool 4000 cooling system treatment for extended life coolants for use with heavy-duty commercial vehicles.

The formulation adds benefits to ELCs used in commercial and heavy-duty vehicles and equipment, providing corrosion protection and extending the service life of the coolant. This can increase uptime, reduce maintenance costs and extend the life of a vehicle by reducing engine wear, according to Penray.

Pencool 4000 is nitrite-free and provides protection to all metals typically wetted by coolant, including steel, cast iron, copper and aluminum. It protects against rust and corrosion common in cooling systems, extending radiator life. The product contains additives that protect 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 vehicles and construction equipment. Pencool 4000 is supplied in 16-ounce bottles, as well as in 5-gallon pails and 55-gallon drums.

"While we continue to offer powerful and effective supplements for conventional coolant blends, this new Pencool 4000 was specifically developed for the new-generation ELC, OAT and NOAT coolants,” said Steve Muth, chief chemist for Penray. “Penray has worked hard to devise new ways to fight the corrosion and cavitation that are symptoms of compromised ELCs."