1. Mounting position- paul-ryan.info
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In most cases the oil cooler can be mounted between the main radiator and the grille for maximum airflow. But on some cars you may have to mount it low down behind the front valance. Some coolers have to be mounted upright; others can be on their side or even upside down.

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How to fit an oil radiator

The oil in your engine needs to be kept at an optimum temperature so it can still carry heat...