2006 Subaru B9 Tribeca Owner's Manual - Page 308

11-12 Maintenance and service Changing the coolant Always add genuine Subaru cooling system conditioner whenever the coolant is replaced. Change the engine coolant and add genuine Subaru cooling system conditioner using the following procedures according to the maintenance schedule in the "Warranty and Maintenance Booklet". 1. Remove the under cover. Do not pour the coolant too quickly, as this may lead to insufficient air bleeding and trapped air in the system. Coolant capacity (Guideline): 7.8 US qt (7.4 liters, 6.5 Imp qt) Never attempt to remove the radiator cap until the engine has been shut off and has cooled down completely. Since the coolant is under pressure, you may suffer serious burns from a spray of boiling hot coolant when the cap is removed. 4. Install the under cover. Be careful not to spill engine coolant when adding it. If coolant touches the exhaust pipe, it may cause a bad smell, smoke, and/or a fire. If engine coolant gets on the exhaust pipe, be sure to wipe it off. Do not splash the engine coolant over painted parts. The alcohol contained in the engine coolant may damage the paint surface. B00311 1 B00310 2. Place a proper container under the drain plug and loosen the drain plug. 3. Loosen the radiator cap to drain the coolant from the radiator. Then drain the coolant from the reserve tank. Tighten the drain plug securely. 1) Fill up to here 5. Slowly pour the coolant and fill up to just below the filler neck, allowing enough room to add genuine Subaru cooling system conditioner in the radiator. Add genuine Subaru cooling system conditioner until the coolant level reaches the filler neck.