The Oil Cooler brings the oil temperature and coolant temperature of the turbo six down to the target level where the engine can deliver maximum power without the risk of thinning of the oil. Every M440i xDrive Gran Coupe features a compact plate core Oil Cooler that speeds up oil warm-up after startup and draws off excess heat as boost ramps up. As a result of feedback control action, the viscosity breakdown that can damage bearings is avoided so that the driver feels confident flooring the throttle on backroads or carrying gear. Revised aluminum alloys combat interior corrosion, maintaining a leak-proof seal that owners appreciate for the life of a BMW powertrain. The water-based Oil Cooler fitted to every M440i xDrive Gran Coupe, whether the 2022 launch edition or recent 2025 mild-hybrid variant, was chosen as it was deemed by BMW to be the light and highly efficient package. The neat arrangement lightens the nose, opens up airflow for the intercooler, and speeds up warming up of the engine to give the M440i xDrive Gran Coupe a slight but real edge in fuel economy and emissions. The Oil Cooler maintains viscosity stable under heavy loads, allowing the intelligent xDrive system to unleash all 386 horses without thermal alarms, thereby enhancing performance and safety. The built-in sensors that track and monitor the flow of coolant will send a message to the control unit to drop power if the temperatures climb. This is a layer of protection that many of its rivals don't bother with. The BMW recommended routine coolant service keeps the passages clear, allowing the Oil Cooler to perform at full capacity year after year. Owners of this dedicated Oil Cooler have the assurance that their BMW M440i xDrive Gran Coupe will remain strong on any road. This Oil Cooler is a quiet testament to the brilliance of BMW engineering. In addition, it is noticed that several consistent reviews point out the BMW Oil Cooler package and the factory Oil Cooler layout as advantages of the M440i xDrive Gran Coupe.
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