With regard to CSF, I had to change mine out as well (making this one number 3). They blamed the leak in my motor mounts, saying that the motor moved too much under load which cause the radiator to flex and fail in that area behind the upper neck. I have solid mounts now, so lets see how that works out when/if I have another leak in that area.
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 2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL
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