Join Date: Sep 2007
Location: Louisville, KY
Car Year: 2008
Car Model: LL Bean (4EAT)
Feedback Score: 1 reviews
My Forester is a 2008 made in July 2007. It came with Subaru's green "Long Life Coolant" good for 30 months/30,000 miles. It must be mixed 50/50.
In late 2008/ early 2009 Subaru switched over to blue "Long Life Super Coolant" good for 11 years/137,500 miles on the factory fill, and 6 years/75,000 miles on the second fill. It is premixed.
Subaru then put out an email saying: "Going forward we are recommending that when adding, replacing, or servicing the cooling system, the blue Genuine Subaru Long Life Coolant should always be used."
That sounds like the green and blue can be combined, and that is what happened at my 30K service. The dealer drained the radiator which removed about half the green coolant in the system, and added blue.
I recently had the head gaskets preemptively replaced by an independent while they were doing the timing belt, and they filled the system with green coolant, because it was "original".
Based on Subaru's email, I don't think the color of the Subaru coolant matters when adding or changing, but the coolant should be Subaru.
2008 LL Bean