It’s a simple fact; when your heavy duty engine fails and is out of commission, it is very costly to your fleet. Uptime now turns into downtime. That’s why the Prestone Command^® family of heavy duty products was specifically developed for heavy duty engines, engineered to maximize performance and uptime while decreasing maintenance and total cost of ownership. Prestone^® has been pioneering antifreeze/coolant for the better part of a century, and with Prestone Command^®, we continue to deliver the innovation that fleets, and those that serve them, can trust.