The Acura Legend Oil Cooler helps maintain engine temperatures by removing excess heat from the lubricating oil to protect viscosity when driving spiritedly or towing heavy loads. Inside every Acura coupe or sedan that bears the Legend badge, the Oil Cooler joins the coolant loop, allowing the antifreeze to absorb the heat of the oil so that it will warm up quickly but never get hot enough to reach damaging peaks. Early first generation models had a small oil-to-water core alongside the filter while later Legend versions acquired a slightly larger separate stack of their own. They are all based on the same heat exchanger principle of circulating coolant through tight passages alongside flowing oil. This arrangement avoids oil dilution problems when making steep climbs on hills or when running in heat in stop and go but heats the fluid more quickly on cold starts, providing more constant pressure and greater component life. As the maintenance of coolant is neglected, internal passages get plugged up or corroded and the performance of the Oil Cooler is limited. There is a chance of cross-contamination of oil and antifreeze. Still, for the majority of owners of Acura cars, the factory Legend system is a balanced compromise between rapid warm-up and high-load durability, eliminating the need for expensive and complex larger external units. Timely coolant service ensures Acura Oil Cooler efficiency. Respect this Oil Cooler and the engine will reward you by providing you with smooth, reliable power.
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