”In an ideal world, in which no one ever touched the coolant and the vehicle never leaked, a high-quality extended-life coolant would be virtually maintenance-free. But this is not an ideal ...

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 ...

If you’re a maintenance manager or owner-operator who is thoroughly confused as to what type of engine coolant should be in your heavy-duty diesel truck (much less what type of coolant is actually in ...