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Message: <blockquote data-quote="cobrajeff96" data-source="post: 1578052" data-attributes="member: 29141">You can set the fan target temp lower, and yea you'll generally run cooler (depending on ambient and how you're driving) but at the same time there's a tradeoff and that is a fan motor that will have its life shortened.And also remember that oil is a gasket - the cross-hatch pattern on cylinder bores helps to seal the combustion process. If you cool down the motor too much then rings might not expand enough to seal the deal. I actually think this is kind of unlikely unless you're talking about a very exotic cooling system that is surely outside of most people's budget. Then again, as said, you're defeating multiple purposes by doing this sort of extreme cooling.You are not going to blow the motor by intermittently getting 220*F water temps. Hell, the ECU should be pulling timing away in order to protect the motor if things get too hot and too lean in mixture.</blockquote>