How Long is the Shelf Life of Fully Synthetic Engine Oil After Opening?

[LillianaLynn]

Fully synthetic engine oil has a shelf life of 6-9 months after opening. Here is some information about fully synthetic engine oil: Advantages of fully synthetic engine oil: Fully synthetic engine oil uses a higher grade base oil compared to semi-synthetic engine oil. The replacement intervals differ: semi-synthetic engine oil needs to be replaced every 6 months or 7,500 kilometers, while fully synthetic engine oil can be replaced every year or 10,000 kilometers. Fully synthetic engine oil has a wider operating temperature range. In the same working conditions, fully synthetic oil can protect the engine with a lower viscosity, whereas semi-synthetic engine oil has relatively higher usage requirements. Replacement interval: Fully synthetic engine oil should be replaced every year or 10,000 kilometers during use.