{"product_id":"triax-15w-40-full-synthetic-diesel-engine-oil-1-gallon-api-ck-4-extended-drain-moly-boron","title":"Triax 15W-40 Full-Synthetic Diesel Engine Oil 1 Gallon — API CK-4, Extended Drain \u0026 Moly-Boron","description":"\u003cp\u003e\u003cstrong\u003eTriax Fleet Supreme 15W-40 API CK-4 is a full-synthetic, friction-modified heavy-duty diesel engine oil engineered to reduce wear, improve turbo response, and extend drain intervals for modern diesel trucks.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for fleet and owner-operator use, this 1-gallon formulation blends nano-boron and molybdenum friction modifiers with high-shear-stable base stocks to deliver consistent viscosity, cooler operation, and quieter running under heavy loads. It meets API CK-4 performance requirements and is formulated for applications where extended drain intervals, improved fuel economy, and aggressive wear protection matter most.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Triax Fleet Supreme protect my engine under towing or heavy load?\u003c\/h3\u003e\n\u003cp\u003eThe oil emphasizes extreme film strength and low friction to resist metal-to-metal contact during high-stress conditions like towing, hauling, or long highway runs. Improved shear stability keeps viscosity within spec over time so protective films remain intact.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNano-boron and moly friction modifiers reduce wear and lower friction.\u003c\/li\u003e\n  \u003cli\u003eHigh film strength protects bearings, cam lobes, and turbo components.\u003c\/li\u003e\n  \u003cli\u003eMaintains viscosity under thermal stress for long-term protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this oil in my Ford, Chevy, GMC, or Dodge diesel pickup?\u003c\/h3\u003e\n\u003cp\u003eYes — Triax Fleet Supreme is formulated to be compatible with a wide range of heavy-duty diesel pickups including Ford Powerstroke, Chevrolet\/GMC Duramax, and Dodge Ram Cummins engines. It meets API CK-4 baselines and is suitable where 15W-40 viscosity is specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAPI CK-4 performance level for contemporary diesel engines.\u003c\/li\u003e\n  \u003cli\u003eSafe for turbocharged and naturally aspirated diesel engines.\u003c\/li\u003e\n  \u003cli\u003eWorks in on- and off-road duty cycles when 15W-40 is recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and economy benefits can I expect?\u003c\/h3\u003e\n\u003cp\u003eTriax targets lower operating temperatures, quieter engine operation, and measurable fuel efficiency gains through reduced friction. Fleet tests indicate multi-percent improvements in fuel use and faster turbo spool-up, which can translate to real-world savings over long service intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLower friction coefficient for improved MPG and quicker turbo response.\u003c\/li\u003e\n  \u003cli\u003eQuieter operation and reduced heat during heavy use.\u003c\/li\u003e\n  \u003cli\u003eExtended drain capability for less downtime and lower maintenance costs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long can drain intervals be with this synthetic 15W-40 oil?\u003c\/h3\u003e\n\u003cp\u003eTriax Fleet Supreme is designed for extended drains when used in compatible equipment and monitored properly. Typical recommendations depend on duty cycle and oil analysis, but the formula supports substantially longer intervals than conventional oils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHighways\/semi applications: capable of exceeding 100,000 miles under planned maintenance.\u003c\/li\u003e\n  \u003cli\u003eSuper Duty pickups: support for up to 30,000-mile intervals in many conditions.\u003c\/li\u003e\n  \u003cli\u003eOil analysis advised to validate intervals based on load, fuel, and service history.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Triax Fleet Supreme 15W-40 is aimed at professional fleets, owner-operators, and pickup owners who need robust wear protection, extended service intervals, and improved fuel economy without changing engine hardware. It’s especially relevant for drivers who tow frequently, operate under sustained heavy loads, or want a high-shear-stability oil that maintains protective viscosity over long distances. Always follow your engine manufacturer’s viscosity and service recommendations and use oil analysis when extending drain intervals.\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: Is Triax Fleet Supreme compatible with my diesel pickup?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it meets API CK-4 and works with Ford Powerstroke, Chevy\/GMC Duramax, and Dodge Cummins where 15W-40 is specified.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I extend drain intervals with this oil?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Potentially, yes; it supports extended drains but use oil analysis and follow manufacturer guidance before extending intervals.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Triax","offers":[{"title":"Default Title","offer_id":67586901901497,"sku":"B07MMYN4WH","price":117.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/triax-fleet-supreme-front-gallon.jpg?v=1790496706","url":"https:\/\/redleafauto.ca\/products\/triax-15w-40-full-synthetic-diesel-engine-oil-1-gallon-api-ck-4-extended-drain-moly-boron","provider":"Redleaf Auto","version":"1.0","type":"link"}