Parts for your 2016 Subaru Impreza-Engine oil

2016 Subaru Impreza engine oil — what it does and when to change it

Engine oil is absolutely used and essential in the 2016 Subaru Impreza. Technical sources including the Subaru Owner’s Manual for MY16 Impreza and Subaru Australia/New Zealand maintenance schedules specify engine oil for the 2.0‑litre FB-series boxer petrol engine, typically a full synthetic 0W‑20 meeting API SN (or later) and ILSAC GF‑5/6. The viscosity grades referenced follow SAE J300 standards. These sources confirm engine oil is relevant and required for this model.

In this Impreza, quality engine oil does the heavy lifting: it lubricates moving parts to cut friction and wear, carries away heat from hot spots, helps keep internals clean by suspending contaminants, protects against corrosion, and aids sealing around the piston rings. It also supports correct operation of hardware like variable valve timing. Without the right oil at the right level, the flat‑four won’t stay happy for long.

For Australia and New Zealand, Subaru specifies a low‑viscosity full synthetic oil (0W‑20) for everyday use, some owners in hotter conditions or heavier duty cycles may be permitted to use 5W‑30 where the manual allows. Always match the oil to the specification in the Owner’s Manual rather than guessing by brand alone.

Service schedules in AU/NZ typically call for regular oil and filter changes around every 12 months or 12,500 kilometres under normal driving, with shorter intervals for severe use (frequent short trips, dusty roads, lots of idling). Owners should check the dipstick monthly, top up as needed with the same spec, and avoid overfilling. A genuine (or high‑quality equivalent) oil filter and a new drain plug washer are recommended at each change, and used oil should be disposed of responsibly. Note that engine oil is different from CVT fluid, both are separate service items.

• Choose oil meeting API SN/SN Plus/SP and ILSAC GF‑5/GF‑6 as specified by Subaru.
• Warm the engine, park level, wait a few minutes, then check the dipstick for an accurate reading.
• If the oil warning light appears, stop the engine promptly and investigate the level and possible leaks.

These points align with the Subaru MY16 Impreza Owner’s Manual, Subaru AU/NZ maintenance schedules, and industry standards (SAE J300 viscosity and API service categories).

Popular questions about 2016 Subaru Impreza engine oil

What engine oil type should the 2016 Impreza use?
Subaru specifies a full synthetic oil meeting API SN (or later) and ILSAC GF‑5/6, with 0W‑20 the usual factory recommendation for the 2.0‑litre FB boxer. In hotter climates or heavier use, 5W‑30 may be acceptable if allowed in the Owner’s Manual. Matching the spec matters more than the brand.

How often should the oil be changed?
For typical Australian and New Zealand conditions, the scheduled interval is commonly around every 12 months or 12,500 km, whichever comes first. Shorten the interval if the vehicle sees lots of short trips, dusty roads, or frequent idling. Always follow the maintenance schedule applicable to the vehicle’s VIN and local market.

Can 5W‑30 be used instead of 0W‑20?
If the Subaru manual for this model and market permits 5W‑30, it can be used, particularly in warmer conditions or heavier duty cycles. Expect a minor trade‑off in fuel economy versus 0W‑20. The crucial part is meeting Subaru’s API/ILSAC specifications.