What is the recommended oil viscosity for a Vauxhall Astra?

I am about to change the oil in my Vauxhall Astra and I am not sure what viscosity to use. Can you provide me with some guidance?

The recommended oil viscosity for a Vauxhall Astra is 5W-30. This is specified by the manufacturer and is best suited for the engine's needs. It provides optimal lubrication and protection for the engine, ensuring its longevity and efficiency.

I would suggest going for a synthetic blend oil in the viscosity range of 5W-30. This provides the best of both worlds, with the affordability of conventional oil and the performance benefits of a full synthetic.

In my experience, going for a higher viscosity oil, like 10W-40, is better for older Vauxhall Astra models. It provides better protection for worn out engines and reduces oil consumption.