The 2008 Subaru WRX STI and all 2009 Subaru’s have a type of coolant “Subaru Super Coolant”. This coolant is blue and has a “S” in the middle with a red cape.The new Coolant must not be mixed with any other type of coolant. When the cooling system is serviced the new coolant must be used.Adding any other coolant will effect the protection capabilities of the coolant, which Subaru claims will last 10 years.This should eliminate the hazardous waste and also be a money saver and be better for the environment.It is more expensive than regular coolant and the current Subaru coolant. Also the fact is not every quick lube will have it available mainly due to the cost. 10 years of service seems like a long time for coolant and many will be faced with large repair bills when the wrong coolant is used.The GM lifetime coolant has caused numerous problems, as have some of the rice burners I have a problem leaving synthetic oil in for the recommended time I cannot imagine leaving the coolant for ten years.