Castrol GTX Ultraclean (case of 6)Size: 32oz Available for delivery Castrol® GTX® is a premium conventional motor oil that has been helping to extend engine life for over 50 years. Key features Castrol GTX Conventional Motor Oil delivers superior protection against engine sludge, advanced protection against viscosity and thermal breakdown, premium quality base oils and anti-wear additives to help extend the life of your engine, and helps minimize oil consumption Helps extend the life of your vehicle Maximum protection against viscosity and thermal breakdown