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sly · 03-15-2016, 07:50 PM

You can use Peak 50/50 long life antifreeze. It is silicate free and is safe for our engines. http://www.autozone.com/antifreeze-r...nt/513652_0_0/

Subaru recommends their cooling system conditioner. [ame="http://www.amazon.com/Subaru-SOA635071-Coolant-System-Conditioner/dp/B00IGZP2UE"]Amazon.com: Subaru SOA635071 OEM Coolant System Conditioner: Automotive[/ame] This is actually just a special kind of stop leak. They put it in from the factory and recommend it for all Subaru engines including the FR-S. Make sure that you add this back to the cooling system or that the dealer does. If this is missing, it could cause coolant to seep past the head gaskets.

03-15-2016, 07:50 PM	#3
sly Senior Member Join Date: Dec 2015 Drives: 2016 Cosworth 2.2 BRZ Location: TN Posts: 335 Thanks: 88 Thanked 198 Times in 124 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	You can use Peak 50/50 long life antifreeze. It is silicate free and is safe for our engines. http://www.autozone.com/antifreeze-r...nt/513652_0_0/ Subaru recommends their cooling system conditioner. [ame="http://www.amazon.com/Subaru-SOA635071-Coolant-System-Conditioner/dp/B00IGZP2UE"]Amazon.com: Subaru SOA635071 OEM Coolant System Conditioner: Automotive[/ame] This is actually just a special kind of stop leak. They put it in from the factory and recommend it for all Subaru engines including the FR-S. Make sure that you add this back to the cooling system or that the dealer does. If this is missing, it could cause coolant to seep past the head gaskets.