A car overheating in traffic but not at highway speed almost always has a cooling system problem involving airflow rather than coolant volume. At highway speed, air flows through the radiator ...

Internal combustion engines — including those that run on diesel fuel — rely on various systems, accessories, and electronics to keep the pistons moving and your wheels turning. Of those systems and ...

Failure to properly maintain your cooling system is a leading cause of catastrophic diesel engine problems, accounting for approximately 40% of engine failures. The damage being done is difficult to ...

New advanced engines and cooling systems are changing cooling system maintenance requirements. Service technicians and fleet managers should review their preventative maintenance (PM) strategy and ...

The fields along America’s highways once covered in frost are now fully sprinkled in morning dew, indicating spring has sprung and summer is on its way. Soon, sweltering heat will pour down from the ...

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 ...

Elizabeth Nelson, coolant program manager at Polaris Laboratories, a fluid-analysis company in Indianapolis, Ind., tells a story that would strike fear into the heart of any fleet manager. A class-8 ...