Parts for your 2016 Nissan Pulsar-Oil cap

2016 Nissan Pulsar oil cap — purpose, care, and replacement

Yes, the 2016 Nissan Pulsar is fitted with a standard engine oil filler cap. This is confirmed by Nissan’s owner’s handbook for the Pulsar (C13) and corresponding engine bay diagrams for its HR/MR-series petrol engines, which show a labelled oil cap on the cam/rocker cover.

On the 2016 Pulsar, the oil cap does a simple but vital job: it seals the engine’s oil filler neck to keep oil in and contaminants out. That seal helps maintain a closed crankcase so the Pulsar’s PCV system can do its thing, keeps dust and moisture from sneaking under the bonnet, and stops oil mist from making a mess of coils, belts, and sensors. It also prevents drips onto the exhaust where they can create smells or, in the worst case, a fire risk.

Owners often only touch the cap during oil changes, but it deserves a quick look every service. The cap’s O-ring or gasket can harden or flatten with age and heat, and the plastic body can crack if it’s been over-tightened. A tired seal can lead to light oil weep, an oily film on the cover, or a faint oil smell after a drive. On MAF-equipped Pulsars, a loose or missing cap can introduce unmetered air and contribute to a rough idle or a warning light.

Replacement is straightforward and tool-free. With the engine cool, twist the cap anti-clockwise, wipe the filler neck, and inspect the threads. If the cap doesn’t seat snugly, the gasket looks perished, or the cap is cracked or warped, fit a new cap. Choose a genuine Nissan cap or a quality equivalent that matches the thread and seal profile for the Pulsar’s engine. Hand-tight is all that’s needed—nip it up until it’s firm, no need to lean on it. After any oil change, double-check the cap is on and seated before starting the car.

As part of routine servicing in Australia and New Zealand—typically every 10,000 km or 12 months—add these quick checks:

• Inspect cap seal for hardening, cracks, or flattening.
• Clean off any oil mist around the filler area.
• Verify the cap tightens smoothly and sits square on the neck.

If there’s persistent oil smell, visible splatter, or the cap feels loose despite tightening, it’s time for a replacement to protect the Pulsar’s engine and keep the bay tidy.

Popular questions

Where is the oil cap on a 2016 Nissan Pulsar?
The oil cap sits on top of the engine’s cam/rocker cover, usually toward the front or centre under the bonnet. It’s a round, twist-off cap, commonly marked “Engine Oil” and may show the recommended viscosity (for example, 5W-30). Exact placement can vary slightly by engine variant, but it’s clearly visible once the engine cover is off (if fitted).

What are the signs the oil cap needs replacing?
Look for a hardened or cracked rubber seal, oil residue or dampness around the filler neck, a cap that no longer tightens firmly, or a faint hot-oil smell after driving. In some cases, a loose or missing cap can cause a rough idle or trigger a warning light due to air entering the crankcase.

Is it safe to drive without the oil cap?
No. Driving without the cap risks oil splashing out, contamination getting in, and potential engine bay mess or damage. If the cap is lost, use a proper replacement as soon as possible. As a very short-term measure to reach a workshop, a clean temporary seal may reduce spatter, but it’s not recommended beyond that.