2001 Subaru Impreza Owner's Manual - Page 263

Maintenance and service Filler neck "FULL" level mark "LOW" level mark Fill up to here OM-H0197 HG0114 3. Slowly pour the coolant and fill to the radiator filler neck and to the reserve tank's "FULL" level mark. Do not pour the coolant too quickly, as this may lead to insufficient air bleeding and trapped air in the system. Coolant capacity: 6.2 US qt (5.8 liters, 5.2 Imp qt) Rubber gaskets HG0115 4. Put the radiator cap back on and tighten firmly. At this time, make sure that the rubber gaskets in the radiator cap are correctly in place. 5. Start and run the engine for more than five minutes at 2,000 to 3,000 rpm. 6. Stop the engine and wait until the coolant cools down (122 to 140°F [50 to 60 °C]). If there is any loss of coolant, add coolant to the radiator's filler neck and to the reserve tank's "FULL" level. - CONTINUED - 10-15