Does gear oil in a pump container for oil have a shelf life?

Yes, gear oil in a pump container can have a shelf life, typically ranging from 3 to 5 years if stored properly. Factors such as exposure to heat, moisture, and contamination can affect its longevity and performance. Always check the manufacturer's recommendations and inspect the oil for any signs of degradation before use. If in doubt, it's best to discard old oil and replace it with fresh product.