5W-40 Heavy Duty Diesel Engine Oil, Synthetic Pro-Tech, 5 Quarts (5W-40, 5 QTS)

Enhance your diesel engine's performance with this premium 5W-40 synthetic engine oil. Featuring advanced Pro-Tech technology, this heavy-duty formula delivers superior protection and efficient operation across diverse driving conditions. The 5W-40 multi-grade designation ensures excellent cold starts while maintaining robust protection at high operating temperatures. This professional-grade engine oil meets API CK-4/SN specifications, making it suitable for modern diesel engines. The generous 5-quart container provides complete coverage for most vehicles during oil changes. The synthetic blend formulation helps maintain engine cleanliness and promotes optimal performance in heavy-duty applications. Designed for diesel engines that require superior protection against wear, deposits, and oil breakdown under demanding conditions.

• SYNTHETIC TECHNOLOGY: Pro-Tech synthetic formulation provides superior engine protection and performance for heavy-duty diesel engines
• VISCOSITY GRADE: 5W-40 multi-grade oil ensures excellent flow at cold temperatures while maintaining thick protection at high temperatures
• CAPACITY: Large 5-quart container (4.73L) provides enough oil for complete oil changes in most vehicles
• PERFORMANCE STANDARD: Meets API CK-4/SN specifications for use in modern diesel engines requiring advanced oil formulations
• TEMPERATURE PROTECTION: Wide temperature range capability helps maintain engine protection in both cold starts and high-temperature operations