An open-loop cooling system, also called raw water cooling, draws water directly from the body of water the boat is floating in, whether it's saltwater or freshwater. That water is pulled through a ...

Burning gasses during the engine's power stroke can reach around 4500 degrees Fahrenheit. Most of this heat leaves through the exhaust system, some dissipates into the oil, and some cooling takes ...

How hot does your engine run? Is it on the cool side? The hot side? Where should it be? How big of a radiator should you run? Antifreeze or water? Tap or distilled? Do you need a pressurized cooling ...