How do you tune up a Subaru legacy?

To tune up a Subaru Legacy, start by replacing the engine oil and oil filter to ensure proper lubrication. Check and replace the air filter and fuel filter if necessary to maintain efficient airflow and fuel delivery. Inspect the spark plugs and ignition system, replacing any worn plugs or components to improve engine performance. Lastly, ensure that all fluid levels (coolant, brake fluid, Transmission Fluid) are topped off and check for any leaks or signs of wear.