What is the best oil to put in an astra 1.6 8 valve engine?

For a Vauxhall Astra 1.6 8-valve engine, the recommended oil is typically a high-quality 10W-40 motor oil, which provides good protection and performance across a range of temperatures. It's important to check the owner's manual for specific oil recommendations and specifications, as they may vary based on the engine's production year. Additionally, using fully synthetic oil can enhance engine performance and longevity. Always ensure the oil meets the necessary API or ACEA specifications.