When you cut to the basic principles of heavy-duty trucks it comes down to return on investment: maximum mpg, meeting emissions requirements and the truck running at optimum conditions and ...

Coolants are the least understood fluid in a heavy duty truck engine today. But a little attention to them can avert serious problems for your fleet. Photos: Prestone If you’re a maintenance manager ...

The antifreeze/cooling system for a heavy duty engine must be maintained for the entire system to operate at optimum efficiency. Each component within the system relies on the other components for ...