Coolant System FAQ
Quote:
Originally Posted by Unabomber
Coolant System FAQ
What type of coolant should I run in my car? You can never go wrong by using Genuine Subaru Coolant available through your local dealer.
Is the Subaru coolant pre-mixed or not? They have both kinds, but BE SURE to read the labels carefully as they are nearly identical in appearance except the wording on the package!
What aftermarket coolant can I use? This Subaru .pdf document states Subaru's position on which type of aftermarket coolant you can safely use.
Is there a required coolant additive? Yes. Subaru Cooling System Conditioner has recently been required to be added with every coolant replacement to prevent coolant system leaks. This recommendation applies to every Subaru model for every model year.
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If you click the link under, "What aftermarket coolant can I use", it will say that all Subaru motors should use the OEM conditioner. So I do that. Not trying to make anyone wrong, just saying...
Pretty sure I saw something in the manuals for my car about it too...