Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Subaru Outback F6-3.0LFACTORY OEM SERVICE PROCEDURE
Engine Oil: Service and Repair
REPLACEMENT
1. Drain engine oil by loosening engine oil drain plug.
2. Open engine oil filler cap for quick draining of the engine oil.
3. Replace drain plug gasket.
4. Tighten engine oil drain plug after draining engine oil.
Tightening torque: 44 Nm (4.5 kgf-m, 33 ft. lbs.)
5. Fill engine oil through filler pipe up to upper point on level gauge. Make sure that vehicle is placed level when checking oil level. Use engine oil of proper quality and viscosity, selected in accordance with the table in figure.
Recommended oil ILSAC OF-3, which can be identified with the new API certification mark (Star burst mark) API certification SL with the words "ENERGY CONSERVING" (if you cannot obtain the oil with SL grade, you may use SJ grade "ENERGY CONSERVING" oil) ACEA specification A1, A2 or A3.
Engine oil amount for preparation (with replacing engine oil): Approximately 5.6 L (5.9 US qt. 4.9 Imp qt)
The proper viscosity helps vehicle get good cold and hot starting by reducing viscous friction and thus increasing cranking speed.
CAUTION: When replenishing oil, it does not matter if the oil to be added is a different brand from that in the engine; however, use oil having the ILSAC or API classification and SAE viscosity No. designated by SUBARU.
NOTE: If vehicle is used in desert areas with very high temperatures or for other heavy duty applications, the following viscosity oils may be used: ILSAC classification: GF-3 or API classification: SL SAE Viscosity No.: 30, 40, 10W-50, 20W-40, 20W-50.
6. Close engine oil filler cap.
7. Start engine and warm it up for a time.
8. After engine stops, recheck the oil level. If necessary, add engine oil up to upper level on level gauge.
1. Drain engine oil by loosening engine oil drain plug.
2. Open engine oil filler cap for quick draining of the engine oil.
3. Replace drain plug gasket.
4. Tighten engine oil drain plug after draining engine oil.
Tightening torque: 44 Nm (4.5 kgf-m, 33 ft. lbs.)
5. Fill engine oil through filler pipe up to upper point on level gauge. Make sure that vehicle is placed level when checking oil level. Use engine oil of proper quality and viscosity, selected in accordance with the table in figure.
Recommended oil ILSAC OF-3, which can be identified with the new API certification mark (Star burst mark) API certification SL with the words "ENERGY CONSERVING" (if you cannot obtain the oil with SL grade, you may use SJ grade "ENERGY CONSERVING" oil) ACEA specification A1, A2 or A3.
Engine oil amount for preparation (with replacing engine oil): Approximately 5.6 L (5.9 US qt. 4.9 Imp qt)
The proper viscosity helps vehicle get good cold and hot starting by reducing viscous friction and thus increasing cranking speed.
CAUTION: When replenishing oil, it does not matter if the oil to be added is a different brand from that in the engine; however, use oil having the ILSAC or API classification and SAE viscosity No. designated by SUBARU.
NOTE: If vehicle is used in desert areas with very high temperatures or for other heavy duty applications, the following viscosity oils may be used: ILSAC classification: GF-3 or API classification: SL SAE Viscosity No.: 30, 40, 10W-50, 20W-40, 20W-50.
6. Close engine oil filler cap.
7. Start engine and warm it up for a time.
8. After engine stops, recheck the oil level. If necessary, add engine oil up to upper level on level gauge.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.