Penray's TS200 3-Way Universal Test Strips are designed for all heavy-duty coolant types, including extended-life coolant. These strips are a quick and effective way to determine the freeze point, as ...

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 ...

CCJ's 10-44 is brought to you by Chevron Delo heavy duty diesel engine oil. Now there's even more reasons to choose Delo. We're talking coolants again this week, but this time how to know when you've ...

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 ...

Temperatures across the U.S. are tumbling, and the temperature swing can be a lot for a truck's components to handle, especially the coolant system. For most of at least the last six months, the ...