AMSOIL 5W-30 Synthetic Motor Oil Signature Series 40000 KM AMSOIL 5W-30 Synthetic Motor Oil Signature Series is a high-performance motor oil designed to provide exceptional protection and performance for your engine. It is formulated with advanced synthetic technology to deliver superior wear protection, excellent thermal stability, and enhanced fuel efficiency. Signature Series oil is engineered to withstand extreme conditions and maintain its viscosity even under high temperatures. It resists oil breakdown and helps prevent engine deposits, ensuring a cleaner and smoother-running engine. It exceeds industry standards and specifications, offering 75% more engine protection against horsepower loss and wear compared to leading synthetic oils. With its extended drain interval of up to 40,000 kilometers, or approximately 25,000 miles, this oil reduces the frequency of oil changes, saving you time and money. It provides long-lasting protection and peace of mind for your vehicle's engine. AMSOIL Signature Series 5W-30 Synthetic Motor Oil is recommended for a wide range of vehicles, including cars, trucks, SUVs, and other high-performance applications. It meets or exceeds the requirements of major vehicle manufacturers and is suitable for both turbocharged and naturally aspirated engines. By choosing AMSOIL Signature Series 5W-30 Synthetic Motor Oil, you can experience the ultimate in engine protection, performance, and extended service intervals for your vehicle.