Castrol MAGNATEC 5W-30 A5 is a synthetic engine oil engineered with DUALOCK molecules that cling to metal surfaces and lock together to form a protective layer.
Clinging Protection: Intelligent/DUALOCK molecules stick to critical engine parts (such as the valvetrain, timing chain, pistons, and bearings) even when the oil drains down after the engine is turned off.
Reduced Wear: Dramatically reduces warm-up and stop-start wear by up to 50%.
Low-Friction Performance: Designed as a low-friction oil to support fuel-saving goals and maintain continuous protection across all driving styles and temperatures.