For engines with over 75,000 miles. Superior oil burn-off protection (as measured in NOACK laboratory volatility test). Castrol GTX High Mileage provides superior protection against oil burn-off. 17% better than leading conventional oils in laboratory tests (as measured in NOACK laboratory volatility test). As your engine ages, oil burns off faster. Over time, this can cause increased engine wear, shortening the life of your vehicle. Castrol GTX High Mileage is specially engineered with unique additives to meet the changing needs of your high mileage vehicle. Its technology is proven in industry volatility tests to provide 17% superior oil burn-off protection versus the leading conventional oils (as measured in NOACK laboratory volatility test). After 75,000 miles, help your vehicle live longer with Castrol GTX High Mileage. Castrol GTX High Mileage SAE 5W-30 also contains: Seal conditioners to help reduce leakage. Unique technology to protect against wear and harmful deposits. Proprietary additives to minimize compression loss and maximize engine protection. API Service SM. Made in the USA from domestic and imported components.