Passenger car engine oils
Does engine oil expire? Shelf life explained
Engine oil does not spoil like food, but its shelf life is not unlimited either. Over time — and faster in poor storage — its additives gradually lose effectiveness.
How long does unopened oil last?
Most manufacturers quote about five years from the production date for sealed engine oil, stored dry, under cover and away from extreme heat and cold. The production date or batch code is usually printed on the bottle or its neck.
What about opened oil?
Once opened, oil is exposed to air and moisture. Close part-used bottles tightly and ideally use them within a year.
Signs that stored oil has gone bad
- Sediment or layering at the bottom — the additives have separated.
- A cloudy or milky look, which means it has absorbed moisture.
- An unusual smell or a clear change in thickness.
If you see any of these, do not put the oil in an engine.
Storage tips for shops and workshops
- Store drums on their side, or upright with bungs at the top, under cover so rainwater cannot pool on the lid.
- Use stock in the order it arrived (first in, first out).
- Keep oil out of direct sunlight and away from temperatures above 40 °C.
Quick answers
Where is the production date on engine oil?
Usually printed as a date code or batch number on the bottle body, neck or base.
Can I use five-year-old oil?
If the pack is sealed, it was stored well and shows no sediment or cloudiness, it is usually usable — but fresher oil is better.
Does engine oil freeze?
No, but it thickens. Let it reach room temperature before use.
Need the right product?
See our passenger car engine oils range, or ask our sales team for a recommendation and price.
