You need to make sure you burp the cooling system and let it run till the fans cycle and make sure there is no more sir in the system.
You may need to burp the system a few times. Carry some coolant with you for the first week use in case you need to top it off.
miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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