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SportTrac Discussion
Fluids: Oil, ATF, Coolant, etc.
Radiator Cap Gen 2
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<blockquote data-quote="scott degroot" data-source="post: 966513" data-attributes="member: 66039"><p>The radiator cap doesn't really have an affect on how hot the engine runs...unless it is overheating. The problem with running a lower rated cap is that they system is designed and built for more pressure and running a lower rated cap you are sooner or later going to be pushing coolant out of the overflow tube, also by installing a lower rated cap you are lowering the boiling point of the coolant which in itself can casue a different set of problems. Just becasue the Mustang 4.0 may run a 16lb cap doesn't mean that the ST 4.0 should run it also...then engineers didn't just put a 20lb cap on it to mess with you.</p><p></p><p></p><p></p><p>So is your reasoning behind the lower rated cap simply just to try and avoid the radiator cracking??</p></blockquote><p></p>
[QUOTE="scott degroot, post: 966513, member: 66039"] The radiator cap doesn't really have an affect on how hot the engine runs...unless it is overheating. The problem with running a lower rated cap is that they system is designed and built for more pressure and running a lower rated cap you are sooner or later going to be pushing coolant out of the overflow tube, also by installing a lower rated cap you are lowering the boiling point of the coolant which in itself can casue a different set of problems. Just becasue the Mustang 4.0 may run a 16lb cap doesn't mean that the ST 4.0 should run it also...then engineers didn't just put a 20lb cap on it to mess with you. So is your reasoning behind the lower rated cap simply just to try and avoid the radiator cracking?? [/QUOTE]
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SportTrac Discussion
Fluids: Oil, ATF, Coolant, etc.
Radiator Cap Gen 2
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