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Re: Oil Cooler
An external air-to-air is safer. The stock water cooled ones have been known to back off and cause engine damage. They are also a point where oil and coolant could mix, if the cooler becomes damaged inside. You have to be careful that they don't come loose, if you have to remove a very tight oil filter. With an external air-to-air, you have to be somewhat mindful of not keeping it too cool, you might not want to stick it in an area of open direct airflow. Too cold of oil is more likely to cause engine damage than a bit too hot of oil. I have heard of some guys only running their external Setrab coolers at road race events and then looping the line and running no cooler for normal street driving. Those guys usually have large coolers with air ducting going to them, so they could over cool.
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