Parts for your 2018 Mitsubishi Asx-Oil filter

2018 Mitsubishi ASX Oil Filter — What it does and how to look after it

Yes, the 2018 Mitsubishi ASX uses an engine oil filter. This is shown in Mitsubishi Motors’ Factory Service Manual for MY2018 ASX/RVR/Outlander Sport (Lubrication section) and the Mitsubishi ASA electronic parts catalogue, which both list a full‑flow engine oil filter for the 2.0‑litre petrol and applicable diesel variants. AU/NZ parts catalogues from well‑known suppliers also specify direct‑fit oil filters for the 2018 ASX, confirming it’s standard kit.

What does the oil filter do? It constantly strains out grit, metal flecks and combustion by‑products so the oil can keep the engine’s internals clean and protected. On the ASX, that means helping maintain healthy oil pressure, keeping the MIVEC timing gear happy on petrol models, and supporting turbo longevity on diesel variants. Whether it’s a spin‑on canister or an element in a housing (depending on engine), it’s a simple part doing a big job every time the key turns.

For servicing in Australia and New Zealand, the practical advice is to replace the oil filter at every oil change. Many ASX schedules call for around 15,000 kilometres or 12 months for normal use, and closer to 7,500–10,000 kilometres if the car does short trips, hot/cold swings, towing or dusty roads. Always match the filter to the exact engine code and use quality oil that meets Mitsubishi’s specification (for example, the correct viscosity and approvals for petrol or DPF‑equipped diesel). Genuine Mitsubishi parts or reputable equivalents listed in AU/NZ catalogues are the smart pick.

Handy tips for a fuss‑free change:

• Confirm the right filter for VIN/engine, have a new sump‑plug washer ready.
• Lightly oil the new filter gasket, tighten per the instructions on the filter or as per the service manual — don’t overdo it.
• After start‑up, check for leaks and verify oil level once it settles.
• Dispose of used oil and the old filter at a recycling point, keep receipts and note the odometer for service history.

If the ASX shows an oil pressure warning, unusually dirty oil right after a change, rattly top‑end noise, or repeated leaks around the filter base, park it and have it inspected — a neglected or incorrect filter can cause expensive damage.

Technical sources referenced: Mitsubishi Motors Factory Service Manual (MY2018 ASX/RVR/Outlander Sport, Lubrication section), Mitsubishi ASA Parts Catalogue (ASX GA/GC series), AU/NZ aftermarket application catalogues for 2018 Mitsubishi ASX.

Popular questions

Which oil filter fits a 2018 Mitsubishi ASX?

It depends on the engine variant. The 2.0‑litre petrol and the diesel versions use different filters. Use the VIN or engine code to select an OEM‑spec filter from Mitsubishi or a trusted AU/NZ brand listed for the 2018 ASX. Sticking with the correct, vehicle‑specific listing is important for sealing, flow and bypass settings.

How often should the oil filter be changed on a 2018 ASX?

Change it at every oil service. For most owners that’s about every 15,000 kilometres or 12 months, shorten the interval to 7,500–10,000 kilometres if the car sees lots of short trips, heat, towing or dusty conditions. Matching the interval to local conditions keeps the engine cleaner for longer.

Can the filter be changed without changing the oil?

It’s not recommended. Swapping the filter alone leaves old, contaminated oil behind, which undercuts the whole point. Do both together so fresh oil and a fresh filter start work at the same time and you know exactly where the maintenance cycle is at.