Maximum protection against both viscosity and thermal breakdown. Meets the needs of Ford, Honda, Toyota and Chrysler 5W-20 service. American Petroleum Institute certified. For gasoline engines. Castrol GTX's unique anti-sludge formula helps protect your vehicle from harmful sludge build-up. It's more than just oil. It's liquid engineering. Stop-and-go traffic. Harsh weather conditions. Extending your drain. These severe driving conditions can all cause sludge to build up in your engine, leading to reduced gas mileage, decreased performance, and in some cases, engine seizure. Protect your care from harmful sludge formation with Castrol GTX. It's unique anti-sludge formula provides excellent protection against harmful sludge build-up to help withstand the most damaging driving conditions. Castrol GTX SAE 5W-20 delivers: Ford, Honda, Toyota and Chrysler service fill requirements where SAE 5W-20 is specified. The highest North American standard of protection against viscosity breakdown. Excellent cold weather performance. Advanced anti-wear additives to help extend engine life. Superior detergency action to help prevent deposits. Exceeds API Service SM/SL/SJ/SH; ILSAC GF-4/GF-3/GF-2; API Certified Gasoline Engine Oils; Ford WSS-M2C153-H; Ford WSS-M2C930-A. A premium multi-grade oil, providing all-season protection with exceptional fuel economy. Made in the USA from domestic and imported components.