Engine Maintenance 
Carbon deposits on the air intake valves and in the throttle body reduce fuel economy. Genuine Subaru Engine Cleaner and Genuine Subaru Throttle Plate and Induction Cleaner can remove harmful deposits. Genuine Subaru Fuel Injector Cleaner Fluid can help prevent them.
Left: Dirty Valve - Right: Clean Valve
(Actual pictures taken at Atlantic Subaru)
Left: Dirty PVC Breather Valve - Right: Clean PVC Breather Valve
(Actual pictures taken at Atlantic Subaru)
