2018 Subaru Crosstrek Oil Capacity & Filter

The 2018 Subaru Crosstrek typically takes 5.1 quarts (4.8 liters) of 0W-20 engine oil.

Quick Answer

• Oil Capacity: 5.1 quarts (4.8 liters)
• Recommended Oil Weight: 0W-20
• Oil Specification: API SN or later, or ILSAC GF-5 or later
• Oil Filter (OEM Part Number): 15208AA170 (or superseded numbers)
• Oil Filter (Aftermarket Cross-Reference):
  • Fram: PH6607, XG6607 (synthetic media)
  • Wix: 57055
  • Mobil 1: M1-110

Capacity by Engine Option

For the 2018 Subaru Crosstrek, there typically isn't a significant variation in oil capacity based on engine option within the model year, as most US models are equipped with the 2.0L FB20D engine.

Oil Change Interval

Subaru recommends the following oil change intervals for the 2018 Crosstrek:

• Normal Driving Conditions: Every 6,000 miles or 6 months, whichever comes first.
• Severe Driving Conditions: Every 3,000 miles or 3 months, whichever comes first.

Severe driving conditions include frequent short trips, driving in dusty conditions, extensive idling, towing, or driving in very cold weather. Always refer to your owner's manual for the most accurate and up-to-date information.

Drain Plug Torque

The oil drain plug for the 2018 Subaru Crosstrek should be torqued to 30 ft-lbs (41 Nm). Always use a new crush washer when performing an oil change to ensure a proper seal and prevent leaks. The OEM crush washer part number is typically 803916010.

How to Change the Oil

1. Warm up the engine: Drive the car briefly to warm the oil, which helps it drain more easily.
2. Lift and secure: Safely lift the front of the vehicle using a jack and support it with jack stands.
3. Locate drain plug: Place a drain pan under the oil pan and remove the drain plug with a wrench.
4. Drain oil: Allow all the old oil to drain completely.
5. Remove oil filter: Unscrew the old oil filter. Be prepared for additional oil to come out.
6. Install new filter: Apply a thin coat of new oil to the gasket of the new filter and screw it on by hand until snug, then an additional 1/2 to 3/4 turn (refer to filter instructions).
7. Replace drain plug: Install a new crush washer on the drain plug and reinsert it, tightening to 30 ft-lbs (41 Nm).
8. Add new oil: Lower the vehicle and add the recommended amount of new 0W-20 oil.
9. Check level: Start the engine, let it run for a minute, then shut it off and check the oil level on the dipstick. Top off if necessary.
10. Inspect for leaks: Check for any leaks around the drain plug and oil filter.

Common Issues / Tips for this Generation

• FB20D Engine: The 2018 Crosstrek often uses Subaru's FB20D engine, which is generally reliable but benefits greatly from regular, timely oil changes with the correct viscosity and specification oil. Using the wrong oil or extending intervals can lead to premature wear.
• Oil Consumption: Some Subaru FB engines have been known to consume a small amount of oil between changes. It's a good practice to check your oil level periodically (e.g., every 1,000-2,000 miles) and top off as needed, especially if you drive under severe conditions.
• Spin-on Filter Location: The oil filter on this generation of Crosstrek is typically located on the top-front of the engine, making it relatively accessible for DIY oil changes compared to some other vehicles.
• Crush Washer: Always use a new crush washer with each oil change to prevent leaks. They are inexpensive and critical for a good seal.
• Subaru-Specific Oil: While API SN/ILSAC GF-5 or later oils are acceptable, many Subaru owners opt for Subaru-branded oil or other high-quality full synthetic oils that meet these specifications.

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