Should semi or fully synthetic 5-30 engine oil be used for jaguar x type 2003?

For a 2003 Jaguar X-Type, it is generally recommended to use fully synthetic 5W-30 engine oil to ensure optimal performance and protection, especially in varying temperature conditions. Fully synthetic oils provide better lubrication, improved fuel efficiency, and enhanced engine cleanliness compared to semi-synthetic oils. However, always check the owner’s manual for specific recommendations, as engine condition and driving habits may also influence the best choice.