{"product_id":"valvoline-heavy-duty-synthetic-blend-15w-40-diesel-engine-oil-2-5-gallon-api-ck-4-wear-protection","title":"Valvoline Heavy Duty Synthetic Blend 15W-40 Diesel Engine Oil — 2.5 Gallon, API CK-4 Wear Protection","description":"\u003cp\u003e\u003cstrong\u003eValvoline Heavy Duty Synthetic Blend 15W-40 is a durable diesel engine oil formulated to protect high-mileage trucks, farm equipment, and on-highway fleets under severe duty cycles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEngineered for machines that work hard, this 2.5-gallon jug combines synthetic and conventional base stocks with targeted additive technology to resist breakdown, control deposits, and reduce wear. It delivers consistent viscosity and oxidation stability across wide temperatures and is approved or recommended for major diesel makers including Cummins, Volvo, Mack, Ford, Detroit Diesel and Caterpillar.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil defend engines under heavy loads?\u003c\/h3\u003e\n\u003cp\u003eThe formula includes a blend of synthetic base oils and advanced additives that create a protective film on critical components, reducing metal-to-metal contact and wear. Laboratory tests show improved wear protection compared with industry-standard oils, helping parts last longer in demanding applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTargeted additive technology for component protection in extreme conditions\u003c\/li\u003e\n  \u003cli\u003e35% better wear protection vs. industry standard in Cummins ISB test\u003c\/li\u003e\n  \u003cli\u003eControls deposits and reduces oil breakdown during heavy loads\u003c\/li\u003e\n  \u003cli\u003eMeets API CK-4 and other heavy-duty specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it perform in high heat and varied climates?\u003c\/h3\u003e\n\u003cp\u003eYes — the synthetic blend improves viscosity stability and oxidation resistance, which extends oil life in high-temperature service and maintains protection in colder starts. That year-round performance makes it suitable for seasonal operations and long-haul routes alike.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered for extended oil life under high heat\u003c\/li\u003e\n  \u003cli\u003eMaintains viscosity across temperature swings\u003c\/li\u003e\n  \u003cli\u003eHelps prevent thermal breakdown and sludge formation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this oil compatible with modern emissions systems and OEM specs?\u003c\/h3\u003e\n\u003cp\u003eValvoline’s 15W-40 synthetic blend is formulated to meet contemporary low-emission engine requirements and a wide range of OEM approvals. It satisfies API CK-4 and earlier categories and carries approvals or recommendations for several major manufacturers, supporting both older and newer diesel platforms.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets\/exceeds API CK-4, CJ-4, CI-4 PLUS, CI-4, CH-4, \u0026amp; SN\u003c\/li\u003e\n  \u003cli\u003eApproved\/recommended for Cummins CES 20086, Ford WSS-M2C171-F1\u003c\/li\u003e\n  \u003cli\u003eAlso compatible with Volvo VDS-4.5, Mack EOS-4.5, Detroit DFS 93K222, Caterpillar ECF-3\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this container size and format help maintenance routines?\u003c\/h3\u003e\n\u003cp\u003eThe 2.5-gallon jug strikes a balance between bulk and manageability, making it convenient for shop use, small fleets, or farm owners who need multiple changes without storing large drums. The pour spout and handle design simplify refills and reduce spills during on-site top-ups.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2.5-gallon capacity suitable for fleets and workshop use\u003c\/li\u003e\n  \u003cli\u003ePortable, easier to handle than drums for quick service\u003c\/li\u003e\n  \u003cli\u003eReduces storage footprint while providing multiple refill volumes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Valvoline Heavy Duty Synthetic Blend 15W-40 2.5-gallon is tailored for fleet managers, construction and agricultural operators, owner-operators, and maintenance shops who need a resilient engine oil that balances protection, emissions compatibility, and extended oil life. If your equipment faces heavy towing, continuous operation, or harsh environmental contamination, this formula provides a practical, OEM-backed option to help preserve engine durability while streamlining service operations.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this 15W-40 in older diesel engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It meets multiple legacy and current specs (CI-4, CJ-4, CK-4) and is suitable for many older diesel engines requiring 15W-40 viscosity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I change this oil under heavy use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Change intervals vary by duty cycle and OEM guidelines; follow manufacturer recommendations and monitor oil condition for best results.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Valvoline","offers":[{"title":"Default Title","offer_id":48083418054814,"sku":"B0FBR1GV4T","price":60.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/valvoline-15w40-front-packaging.jpg?v=1785832890","url":"https:\/\/northtrailauto.ca\/products\/valvoline-heavy-duty-synthetic-blend-15w-40-diesel-engine-oil-2-5-gallon-api-ck-4-wear-protection","provider":"North Trail Auto","version":"1.0","type":"link"}