Parts for your 2020 Mitsubishi Eclipse cross-Oil cap

2020 Mitsubishi Eclipse Cross Oil Cap

Yes, the 2020 Mitsubishi Eclipse Cross is fitted with an engine oil filler cap. Technical references that confirm this include: the 2020 Eclipse Cross Owner’s Manual (AU/NZ), which shows the oil filler cap in the engine-bay layout and instructs removing/refitting it during oil changes, the Mitsubishi workshop manual for the 4B40 1.5‑litre turbo petrol (and 4N14 2.2‑litre diesel in some markets), which specifies opening the oil filler cap before draining and refilling, and Mitsubishi’s ASA/parts catalogue, which lists a dedicated oil filler cap and seal for Eclipse Cross (GK) engines. These sources make it clear the oil cap is a required part of the vehicle’s lubrication system.

On the 2020 Eclipse Cross, the oil cap sits on top of the cam cover under the bonnet, marked with the oil-can symbol (petrol models often show “0W‑20” on the cap). Its job is simple but crucial: seal the engine’s oil filler neck to keep contaminants out, keep oil vapour and splash in, and help the PCV system maintain proper crankcase ventilation. A good cap and gasket stop oil misting around the top of the engine and keep that warm oil smell out of the cabin.

During routine servicing, it’s worth a quick look at the cap. Make sure it turns smoothly, seats squarely and the rubber O‑ring isn’t flattened, brittle or torn. Wipe any grit from the neck and threads before refitting, then tighten the cap by hand only—snug, not gorilla tight. If the cap is cross‑threaded, cracked, or the seal is perished, replace it. Running without a cap, even briefly, can throw oil around the bay and let dirt into the engine, so don’t do it.

Owners chasing peace of mind should stick with a genuine Mitsubishi cap that matches the engine variant (4B40 petrol or 4N14 diesel) and build year, the correct fit and heat‑resistant seal matter. Typical signs it’s time to swap include oil residue around the filler area, a whistling noise at idle, or a faint burnt‑oil odour after drives. Replacing the cap is a two‑minute, tool‑free job that helps protect every litre of oil you’ve just paid to put in.

• Inspect the cap and O‑ring at every service or top‑up.
• Clean the filler neck before refitting the cap.
• Replace the cap/seal if cracked, loose, or leaking.

Where is the oil cap on a 2020 Eclipse Cross?

Under the bonnet on top of the engine’s cam cover, clearly marked with the oil‑can symbol. On petrol models, it often also shows the recommended viscosity (commonly 0W‑20). Twist anti‑clockwise to remove, clockwise to refit until snug.

Is it safe to drive if the oil cap is missing?

No. Oil can splash out, contaminants can get in, and crankcase ventilation can be upset. If the cap is missing or damaged, switch off, clean any spilled oil, and fit a correct replacement before driving.

Do petrol and diesel Eclipse Cross models use the same oil cap?

They look similar, but part numbers can differ by engine and market. Use your VIN to confirm the correct genuine Mitsubishi cap for a 4B40 petrol or 4N14 diesel to ensure proper sealing and fit.