4-3. Do-it-yourself maintenance
● When the engine is operated at high engine speeds
● When the engine is operated under heavy loads
● When towing a trailer
● When the engine idles for long periods of time
● When the vehicle is operated in stop and go and/or heavy traffic situations
● When the vehicle is used under severe thermal conditions
● When the vehicle accelerates and decelerates frequently
Under these or similar conditions, you should check your oil at least every
2nd fuel fill-up and change your engine oil more frequently. If your oil consumption rate is greater than 1 quart every 1,200 miles or 1 liter every 2,000
kilometers, contact your SUBARU dealer who may perform a test under controlled conditions.