What kind of oil does a 2015 Subaru Legacy 3.6 R take?
The 2015 Legacy 3.6R uses SAE 5W-30 synthetic engine oil and holds about 6 quarts with a filter.
The 3.6R is powered by a 3.6-liter flat-six engine, and using the correct oil type and amount is important for performance, efficiency, and longevity. This article outlines the official recommendations and practical maintenance guidance based on Subaru’s guidance and common industry practice as of 2024.
Recommended oil grade and viscosity
To ensure proper lubrication across temperature ranges, follow the engine oil grade and quality guidelines specified for the 3.6R. The list below reflects the typical official guidance for this model.
- Oil grade: SAE 5W-30
- Oil type: Full synthetic engine oil (synthetic or high-quality synthetic blend acceptable, with full synthetic preferred)
- Certifications: API SN (or newer) and ILSAC GF-5 (or GF-6) ratings
- Brand considerations: Any reputable brand that meets the above specs is suitable; Subaru OEM oil is an option
Always verify the exact specification in the owner’s manual or with a Subaru dealer, since regional variations and modelyear updates can apply.
Oil capacity and service interval
Knowing the correct oil capacity and change interval helps plan maintenance without guesswork.
- Oil capacity: Approximately 6 quarts (about 5.7 liters) with filter
- Change interval: Typically every 7,500 miles (12,000 km) under normal driving with synthetic oil; shorter intervals (about 3,750 miles / 6,000 km) if using conventional oil or under severe driving conditions
- Oil filter: Replace with every oil change to ensure proper filtration
These figures provide a practical baseline, but always follow the owner’s manual for exact values and consider regional climate and driving conditions.
Practical tips and quick checks
In addition to selecting the right oil, here are quick reminders to maintain engine health and compliance with service schedules.
- Use a reputable oil filter that matches Subaru’s specifications
- Keep a maintenance log noting oil grade, change date, and odometer reading
- Check the oil level with the engine off and on level ground; maintain between the dipstick’s MIN and MAX marks
Regular oil changes are essential for the longevity of the 3.6R, and consult your local Subaru service center if you have climate- or driving-condition concerns or questions about your VIN.
Summary
The 2015 Subaru Legacy 3.6R requires SAE 5W-30 synthetic engine oil, with an approximate capacity of 6 quarts, and a typical change interval of about 7,500 miles under normal synthetic-oil use. Always confirm exact specifications for your vehicle in the owner’s manual or with a Subaru service professional.
