How long does sunflower oil last?
Unopened, it keeps in the cupboard for about 12 months. Once opened, in the cupboard for about 3 months.
This refers to: Refined sunflower oil.

Shelf life of sunflower oil at a glance
| Storage | Unopened | Opened |
|---|---|---|
| Cupboard | 12 months | 3 months |
Store cool, dark and tightly closed; it does not need the fridge. A sharp, harsh smell or taste means the oil has gone rancid.
Past its date does not mean spoiled
These are guide values for food stored correctly. A best-before date is not a throw-away date: many products are still fine after it. Check how it looks, smells and tastes. Mould, an unusual smell or a bulging can are reasons to throw it away. A use-by date is different: do not eat the food after it.