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Castrol® GTX® High Mileage 5W-30 Synthetic Blend Engine Oil is the ultimate choice for extending the life of high-mileage engines. Designed with advanced Phosphorus Replacement Technology, it safeguards emission systems by reducing catalytic converter damage while delivering superior dispersancy to combat sludge buildup. This premium synthetic blend offers exceptional protection against oil burn-off, surpassing industry standards, and features seal conditioners to help minimize leaks. Engineered with advanced additives, it reduces engine wear and improves fuel economy in 5W-20, 5W-30, and 10W-30 grades. Meeting or exceeding API SP/SN PLUS/SN/SM and ILSAC GF-6 specifications, as well as Ford WSS-M2C946-B1 and WSS-M2C961-A1 standards, this oil ensures reliable performance and compatibility with a wide range of vehicles. Perfect for drivers seeking durability and efficiency, this 5-quart solution is tailored to keep engines running smoothly while protecting against wear and sludge for long-lasting value.

Product Features:

Product Features:
• Phosphorus Replacement Technology helps extend emission system life
• Superior dispersancy that fights sludge build up
• Exceptional oil burn-off protection exceeding industry standards (1)
• Seal conditioners to help reduce leaks
• Advanced additives that minimize engine wear
• Improved fuel economy (2)
• (1) Based on API and ACEA volatility specifications
• Meets or exceeds the following specifications:
• (2) In 5W-20, 5W-30 and 10W-30 grades versus industry specifications
• API SP/SN PLUS/SN/SM
• ILSAC GF-6
• Meets Ford WSS-M2C946-B1
• Meets Ford WSS-M2C961-A1