Lucas Oil Synthetic 5W40 A3/B4 Engine Oil is a fully synthetic engine oil designed to provide exceptional lubrication and protection for petrol and diesel engines. Formulated with high-quality synthetic base oils and advanced performance additives, it enhances efficiency, reduces friction, and ensures reliable operation in demanding conditions.Explore the key features and benefits of this engine oil:Fully Synthetic Formula: Blended using premium quality base oils enriched with performance additives, this formulation provides stable viscosity across a wide temperature range, ensuring consistent lubrication for smoother engine operation.Advanced Wear Protection: Designed to meet A3/B4 specifications, this oil forms a protective barrier on engine components, reducing metal-to-metal contact and minimising long-term wear for improved durability.Piston Deposit Control: Engineered with high-performance detergents, this oil prevents carbon build-up on pistons, maintaining combustion efficiency