OEM Mitsubishi Oil Coolers

Protect Your Engine With Efficient Oil Coolers

Our team at Mitsubishi Motors of North America recognizes that your vehicle's critical systems are your primary safeguard during every journey. Oil coolers reduce engine oil temperature to prevent thermal breakdown and maintain proper lubrication. These heat exchangers transfer heat from engine oil to coolant or ambient air. High oil temperatures reduce oil viscosity and lubrication effectiveness. Oil coolers extend engine life by maintaining oil within its proper temperature range. Turbocharged engines and vehicles used for towing benefit most from supplemental oil cooling.

How Oil Coolers Dissipate Heat

Oil coolers use tubes or passages that allow hot engine oil to flow through while coolant or air passes around them. Heat transfers from the oil through metal walls to the cooling medium. Engine oil pumps through the cooler before returning to the engine. Some coolers mount externally in the airflow, while others integrate into the cooling system. Thermostatic valves bypass the cooler until oil reaches operating temperature. This prevents overcooling during warmup. Vehicles like the Mitsubishi Delica and Mitsubishi Grandis maintain proper oil temperature through effective cooler design.

Why Oil Coolers Deteriorate and Leak

Oil coolers fail when internal passages become blocked with debris or sludge. Corrosion weakens metal tubes until they develop leaks. Vibration causes cracks at mounting points and connection fittings. External damage from road debris punctures cooler housings. Mixing coolant and oil occurs when internal seals fail in integrated designs. High pressure from restricted oil passages can rupture cooler components. Generic aftermarket coolers often use thinner materials that fail quickly under pressure. Contaminated oil accelerates internal corrosion and blockage. Related oil filters must be changed regularly to protect cooler passages.

Identifying When Oil Cooler Replacement Is Needed

Replace oil coolers when oil leaks appear around fittings or housing seams. Coolant contamination in engine oil indicates internal cooler failure. Rising oil temperatures during normal driving suggest reduced cooling capacity. Most oil coolers last 100,000 miles or more. External damage requires immediate replacement to prevent oil loss. Genuine Mitsubishi oil coolers provide proper flow capacity and pressure ratings compared to universal coolers that may not handle oil system demands. Shop with confidence at Mitsubishi Motors of North America, thanks to our friendly customer service and hassle-free return policy.