How do Coolant Systems Work?
Radiator-Based Coolant Systems
Most heavy-duty trucks use a large radiator-based system as their primary coolant method. First, your water pump pushes coolant through your engine block, allowing the heat of your engine to be absorbed by the coolant. Your engine coolant then exits your engine block and enters your radiator. Your radiator disperses by allowing moving air to flow over your coolant lines.
Sometimes radiator-based systems aren’t enough to keep an engine at an adequate operating temperature. To make up for this, many drivers decide to install oil coolers. Oil coolers work in the same fashion as radiators. Oil from your engine exits the block and flows through a smaller radiator, where the oil’s heat is dispersed. Oil does not absorb heat as well as coolant, but it’s still a very effective secondary coolant system.
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