The Crosstrek requires 0W-20 full synthetic engine oil.
For the 2021 Crosstrek, Subaru specifies a 0W-20 synthetic oil for the 2.0-liter engine, with an approximate capacity of 4.7 quarts (including the filter). The oil should meet API SN or newer standards and ILSAC GF-5 or newer. Always consult the owner's manual or a local Subaru dealer for region-specific guidance.
Oil specification and standards
The following notes summarize the official oil specification for the Crosstrek. The list below highlights the key technical requirements so you can choose the correct oil at the pump and during a change.
- Viscosity: 0W-20
- Oil type: full synthetic
- Standards: API SN or newer; ILSAC GF-5 or newer
- Capacity: approximately 4.7 quarts (with oil filter)
These specifications apply to typical service for the 2021 Crosstrek in most markets. For exact numbers and any regional variations, consult the owner's manual or a Subaru service adviser.
Notes on selection and service
Using the correct oil helps maintain engine performance and longevity. If you cannot find 0W-20 synthetic, check with a dealer for approved equivalents or regional guidelines, but do not substitute with non-synthetic grades if they are not approved.
Maintenance and change intervals
Oil-change intervals for the Crosstrek depend on driving conditions and the type of oil used. With 0W-20 synthetic, many owners follow Subaru's maintenance schedule, typically ranging from about every 6,000 to 7,500 miles or six months, whichever comes first, though severe service may require more frequent changes. Always refer to the owner's manual for the precise interval for your region.
Summary
In short, the 2021 Subaru Crosstrek uses 0W-20 full synthetic engine oil meeting API SN or newer and ILSAC GF-5 standards, with about 4.7 quarts needed per oil change. Verify the exact specification in your owner's manual and follow Subaru’s recommended maintenance schedule for your region.