Lucas Oil Semi-Synthetic 10W-40 Engine Oil provides durable protection and efficiency for petrol and diesel engines, whether turbocharged or naturally aspirated. Formulated with high-quality base oils and advanced performance additives, it ensures smooth operation under normal and demanding conditions while reducing friction and improving fuel efficiency.Discover the key features of this semi-synthetic engine oil:High-Temperature Protection: Designed to prevent ring sticking at elevated temperatures, this formulation minimises wear and ensures optimal piston ring function, reducing engine stress and maintaining peak performance.Superior Engine Cleanliness: Developed with advanced detergents and dispersants, this oil actively prevents the build-up of sludge, deposits, and varnish, keeping internal components clean and promoting long-term engine health.Stable Oil Performance and Reduced Consumption: Engineered for consistency, this formula maintains its viscosity across a range of temper