2008 Subaru Impreza Owner's Manual - Page 332

11-16 Maintenance and service 4. Install the under cover. 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. Do not pour the coolant too quickly, as this may lead to insufficient air bleeding and trapped air in the system. Guideline of coolant quantity (including coolant in reservoir tank): Non-turbo models: MT: 7.2 US qt (6.8 liters, 6.0 Imp qt) AT: 7.1 US qt (6.7 liters, 5.9 Imp qt) Turbo models except WRX STI: MT: 7.9 US qt (7.5 liters, 6.6 Imp qt) AT: 7.8 US qt (7.4 liters, 6.5 Imp qt) WRX STI: MT: 8.1 US qt (7.7 liters, 6.8 Imp qt) Non-turbo models 1) Fill up to this level 1) 2) "FULL" level mark "LOW" level mark CAUTION . 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. 6. Pour the coolant and fill to the reservoir tank's "FULL" level mark. Turbo models 1) Fill up to this level