Does Subaru Ascent require synthetic oil?
The Subaru Ascent generally requires synthetic motor oil. The standard recommendation is a 0W-20 full synthetic oil for most markets and model years.
For the Ascent, the owner’s manual specifies 0W-20 synthetic oil that meets API SN or newer and ILSAC GF-6 certification. Always verify the exact grade and specification for your year and region, as requirements can vary by model year and market.
Oil type and viscosity requirements
These guidelines summarize the oil type, viscosity and certification Subaru expects for the Ascent.
- Oil type: Full synthetic engine oil (engine oils labeled as synthetic or full synthetic are preferred; conventional oil is not recommended for normal maintenance).
- Viscosity: 0W-20 is the standard grade for most climates; check your manual for any region-specific exceptions.
- Certifications: API SN or newer; ILSAC GF-6 (or newer) certification is required.
- Warranty and compatibility: Use oil that meets Subaru’s specifications to maintain warranty coverage; using oil outside the approved spec can complicate warranty claims.
Following these specifications helps protect the engine and maintain warranty coverage. Always verify the exact specification for your year, region, and trim level in the official manual.
Maintenance and warranty considerations
Beyond the right oil, maintenance intervals and warranty implications matter for owners.
- Oil change interval: Follow the maintenance schedule in the manual; with synthetic oil, intervals are typically around every 6,000 miles (9,600 km) or six months under normal driving, with shorter intervals under severe conditions.
- Oil filter: Replace the oil filter at every oil change with a Subaru-approved filter.
- Brand and source: Use a reputable brand that meets API SN and ILSAC GF-6; Subaru-approved oils from dealerships are commonly used, but many aftermarket options also meet the specs.
- Warranty impact: Using oil that does not meet the specified grade or certification can affect warranty coverage; always adhere to the official specs for your vehicle year and market.
In short, synthetic oil isn’t optional for the Ascent—it’s part of the recommended maintenance to protect the engine and safeguard warranty coverage. Always follow the exact specs in your owner’s manual for your year and region.
Where to find the exact specification for your vehicle
Because model year and regional differences exist, the definitive source is your owner’s manual or Subaru’s official service resources. Look for the Lubrication and Maintenance section, or consult a Subaru service advisor or official website for the precise oil grade, certifications, and maintenance intervals for your specific vehicle.
Summary
Key takeaway: The Subaru Ascent typically requires synthetic oil, with 0W-20 full synthetic as the standard grade. Verify the exact spec in your owner’s manual, and follow the recommended maintenance intervals to protect engine performance and warranty coverage.
