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Castrol® GTX® High Mileage 10W-30 Synthetic Blend Motor Oil is the ultimate choice for extending the life of high-mileage engines. Designed with advanced Phosphorus Replacement Technology, it safeguards your vehicle's emission system while meeting API SP/SN PLUS/SM and ILSAC GF-6 standards. This premium synthetic blend offers superior dispersancy to combat sludge buildup, exceptional oil burn-off protection that exceeds industry standards, and advanced additives to minimize engine wear. Its seal conditioners help reduce leaks, making it ideal for aging engines, while its formulation supports improved fuel economy in 10W-30 grades. Engineered to deliver reliable performance, this motor oil ensures your engine stays cleaner, runs smoother, and lasts longer, all in a convenient 1-quart size.

Product Features:

Product Features:
• Phosphorus Replacement Technology to help extend the life of the emission system
• 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
• (2) In 5W-20, 5W-30 and 10W-30 grades versus industry specifications
• Meets or exceeds the following specifications:
• API SP/SN PLUS/SM
• ILSAC GF-6