Parts for your 2023 Subaru Impreza-Oil filter

2023 Subaru Impreza oil filter — what it does and when to change it

An engine oil filter absolutely is used on the 2023 Subaru Impreza. Subaru’s technical documentation (2023 Impreza Owner’s Manual, Subaru Australia Warranty & Service Handbook, and Subaru service/parts catalogues) lists the oil filter as a standard service item for the FB-series 2.0‑litre petrol engine. It’s a full‑flow, spin‑on canister positioned up top at the front of the engine, making it easy to spot and service.

The oil filter’s job is simple but critical: it traps fine contaminants—metal particles, carbon, and dust—so they don’t circulate through bearings, camshafts, and the timing components. Clean oil keeps clearances tight, reduces wear, quietens the valve train, and helps the engine hold good oil pressure on hot days or long motorway stints. For Aussie and Kiwi drivers dealing with heat, dust, and lots of short trips, a healthy filter makes a real difference to engine longevity and fuel efficiency.

As for servicing, the advice is to replace the oil filter at every oil change. Subaru schedules typically call for annual services or around 10,000–15,000 km, whichever comes first—check the service book for the exact interval for the Impreza’s trim and market. If the car sees plenty of short runs, towing, gravel roads, or stop‑start city traffic, consider tightening that interval. A quality filter is inexpensive insurance compared with engine repairs.

When fitting a new filter, use a reputable brand that meets or exceeds Subaru’s OEM spec. Lightly oil the rubber seal, spin it on by hand until the gasket seats, then tighten to the specified torque or the usual hand‑tight plus an extra turn guideline from Subaru. After start‑up, let the engine idle, check for leaks, and top up oil as needed. Because the Impreza’s filter is mounted high, pre‑filling isn’t essential, but do avoid revving straight after a change so oil pressure can stabilise. Dispose of the old oil and filter responsibly at a recycling facility.

• Use the correct viscosity engine oil (commonly 0W‑20 for the FB20 engine