Subaru Legacy: Engine oil

Subaru Legacy: Engine oil

NOTE

● When the engine low oil level warning light illuminates, have your vehicle inspected by your SUBARU dealer as soon as possible.

● The engine oil consumption rate is not stabilized, and therefore cannot be determined until the vehicle has traveled at least several thousand miles (kilometers). Even after break-in, when the vehicle is used under severe driving conditions such as those mentioned in the Warranty and Maintenance Booklet, engine oil is consumed or deteriorated more quickly than under normal driving conditions. If you drive your vehicle under these severe conditions, you should check the oil level at least at every second fuel fill-up time, and change the oil more frequently. Please refer to the Warranty and Maintenance Booklet for more details.

● If the oil consumption rate seems abnormally high after the break-in period, for example more than 1 quart per 1,200 miles or 1 liter per 2,000 kilometers, we recommend that you contact your SUBARU dealer.

• Checking the oil level
• Changing the oil and oil filter
• Recommended grade and viscosity
• Synthetic oil

Checking the oil level

Check the engine oil level at each fuel stop.

1. Park the vehicle on a level surface and stop the engine. If you check the oil level just after stopping the engine, wait a few minutes for the oil to drain back into the oil pan before checking the level.

2. Pull out the level gauge, wipe it clean, and insert it again.

3. Be sure the level gauge is correctly inserted until it stops with the graphic symbol “” on its top appearing as shown in the illustration.

2.5 L models

1) Notch
2) Full level
3) Low level
4) Approximately 1.1 US qt (1.0 liter, 0.9 Imp qt) from low level to full level

3.6 L models
1) Full level
2) Low level
3) Approximately 1.1 US qt (1.0 liter, 0.9 Imp qt) from low level to full level

4. Pull out the level gauge again and check the oil level on it. If it is below the low level (L), add oil to bring the level up to the full level (F).

CAUTION

● Use only engine oil with the recommended grade and viscosity.

● Be careful not to spill engine oil when adding it. If oil touches the exhaust pipe, it may cause a bad smell, smoke, and/or a fire. If engine oil gets on the exhaust pipe, be sure to wipe it off.

NOTE

● To prevent overfilling the engine oil, do not add any additional oil above the upper level when the engine is cold.

● In 2.5 L engine models, the level gauge has a notch above the upper level. Just after driving or while the engine is warm, the engine oil level reading may be in a range between the upper level and the notch mark. This is caused by thermal expansion of the engine oil.

Changing the oil and oil filter

Change the oil and oil filter according to the maintenance schedule in the “Warranty and Maintenance Booklet”.

The engine oil and oil filter must be changed more frequently than listed in the maintenance schedule when driving on dusty roads, when short trips are frequently made, or when driving in extremely cold weather.

NOTE

Changing the engine oil and oil filter should be performed by a properlytrained expert. It is recommended that you have this service performed by your SUBARU dealer.

1. Warm up the engine by letting the engine idle for approximately 10 minutes to ease draining the engine oil.
2. Park the vehicle on a level surface and stop the engine.
3. Remove the oil filler cap.

2.5 L non-turbo models

2.5 L turbo models

3.6 L models

4. Drain out the engine oil by removing the drain plug while the engine is still warm. The used oil should be drained into an appropriate container and disposed of properly.

WARNING

Be careful not to burn yourself with hot engine oil.

5. Wipe the seating surface and around the drain plug with a clean cloth and tighten it securely with a new sealing washer after the oil has completely drained out.

2.5 L non-turbo models

2.5 L turbo models

3.6 L models

6. Remove the oil filter with an oil filter wrench.

7. Before installing a new oil filter, apply a thin coat of engine oil to the seal.

8. Clean the rubber seal seating area of the bottom of engine and install the oil filter by hand turning. Be careful not to twist or damage the seal.

9. Tighten the oil filter by the amount indicated in the following table after the seal makes contact with the bottom of engine.

CAUTION

● Never over tighten the oil filter because that can result in an oil leak.

● Thoroughly wipe off any engine oil that has spilled over the exhaust pipe and/or under-cover. If left unremoved, the oil could catch fire.

10. Reinstall the cover under the oil filter.

11. Pour engine oil through the filler neck. For the oil capacity (guideline), refer to “Lubricants” F12-4. The necessary quantity of oil depends on the quantity of oil that has been drained. The quantity of drained oil differs slightly depending on the temperature of the oil and the time the oil is left flowing out. After refilling the engine with oil, therefore, you must use the level gauge to confirm that the level is correct.

12. Start the engine and make sure that no oil leaks appear around the filter’s rubber seal and drain plug.

13. Keep the engine idling until the engine reaches the normal operating temperature range, as indicated by the temperature gauge on the combination meter. After that, check the engine oil level again. For further details about the check procedure, refer to “Checking the oil level” F11-12.

Recommended grade and viscosity

CAUTION

Use only engine oil with the recommended grade and viscosity.

NOTE

Engine oil viscosity (thickness) affects fuel economy. Oils of lower viscosity provide better fuel economy. However, in hot weather, oil of higher viscosity is required to properly lubricate the engine.

Synthetic oil

You should use synthetic engine oil that meets the same requirements given for conventional engine oil. When using synthetic oil, you must use oil of the same classification, viscosity and grade shown in this Owner’s Manual. Refer to “Engine oil” F12-4. Also, you must follow the oil and filter changing intervals shown in the Warranty and Maintenance booklet.

NOTE

Synthetic oil of the grade and viscosity noted in chapter 12 is the required engine oil for optimum engine performance. Conventional oil may be used if synthetic oil is unavailable.

Engine compartment overviewCooling system