You’ve heard it said before and it bears repeating: an engine’s number one enemy is heat. So the best way to beat the heat is to maintain the best-running coolant system possible in your heavy-duty ...

Prestone Command Supplemental Coolant Additive is formulated to protect coolant systems from corrosion by replenishing inhibitors, prevent rust and scale buildup and control pH balance with chemical ...

The importance of regular service intervals for heavy-duty diesel engines is well understood. Yet, too often, the service focus is on things other than the engine’s cooling system, such as air, lube ...