{"product_id":"lucas-oil-15w-40-magnum-high-tbn-ci-4-heavy-duty-motor-oil-1-gallon-extended-drain-high-temperature-protection","title":"Lucas Oil 15W-40 Magnum High TBN CI-4 Heavy-Duty Motor Oil, 1 Gallon — Extended Drain, High-Temperature Protection","description":"\u003cp\u003e\u003cstrong\u003eLucas Oil 10076 SAE 15W-40 Magnum High TBN CI-4 is a heavy-duty motor oil engineered to extend drain intervals and protect older, high-soot engines while delivering reliable lubrication under severe conditions.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis Magnum 15W-40 formulation from Lucas Oil is built for demanding work—diesel or gasoline—where soot loading, heat, and extended service life are concerns. Its High TBN (Total Base Number) chemistry and robust detergent package keep contaminants suspended, preserve oil film strength at high temperatures, and reduce the frequency of oil changes compared with conventional 15W-40s. The result is cleaner running internals, reduced oil consumption, and continued pressure where engines and hydrostatic transmissions face tough duty cycles.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil help in high-soot diesel engines?\u003c\/h3\u003e\n\u003cp\u003eHigh soot volumes from older or heavily loaded diesel engines can thicken oil and accelerate wear. Lucas Magnum sustains soot in suspension rather than allowing deposits to form, maintaining viscosity and film strength for longer. That helps protect bearings, rings, and camshafts in prolonged service intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh detergent system holds up to twice the contamination in suspension.\u003c\/li\u003e\n  \u003cli\u003eHigh TBN neutralizes acids produced by fuel combustion.\u003c\/li\u003e\n  \u003cli\u003eReduced soot-related sludge and varnish formation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil perform under high temperatures and heavy loads?\u003c\/h3\u003e\n\u003cp\u003eThis formulation resists thermal breakdown and retains lubricity when engines run hot or under sustained load. Its additives help prevent oil thinning and film rupture, supporting consistent oil pressure and component protection during hard operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh temperature stability prevents oil breakdown in overheating events.\u003c\/li\u003e\n  \u003cli\u003eEnhanced lubricity reduces metal-to-metal wear under load.\u003c\/li\u003e\n  \u003cli\u003eMaintains oil pressure for reliable lubrication at high RPMs and loads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use it in both gasoline and diesel applications, including transmissions?\u003c\/h3\u003e\n\u003cp\u003eYes—Lucas Magnum 15W-40 is suitable for many gasoline and diesel engines and is also compatible with hydrostatic transmissions that can accept engine oils. Its formulation supports broader equipment use where a durable, high-TBN 15W-40 is acceptable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRecommended where manufacturers allow CI-4 or comparable 15W-40 oils.\u003c\/li\u003e\n  \u003cli\u003eWorks well in older engines with larger bearing clearances and higher blow-by.\u003c\/li\u003e\n  \u003cli\u003eCompatible with some hydrostatic transmissions requiring robust engine oils.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this oil affect maintenance intervals and operating cost?\u003c\/h3\u003e\n\u003cp\u003eBecause the oil tolerates greater contamination and resists chemical breakdown, it supports extended drain intervals compared with plain 15W-40 oils. Less frequent fluid changes and lower oil consumption can reduce downtime and cost of ownership for fleet and owner-operator equipment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFormulated for longer drain intervals under recommended monitoring.\u003c\/li\u003e\n  \u003cli\u003eLower oil consumption helps maintain oil levels between services.\u003c\/li\u003e\n  \u003cli\u003eCleaner internals reduce maintenance needs related to deposits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Lucas Oil 10076 SAE 15W-40 Magnum High TBN CI-4 is aimed at owners and operators of older or heavily loaded diesel and gasoline engines, fleet managers, agricultural and construction equipment users, and anyone needing a tough, long-lasting 15W-40 that tolerates higher soot and heat. It is particularly fitting where extended drains, improved soot handling, and sustained oil pressure are priorities; always confirm compatibility with your engine or transmission manufacturer’s specifications before use.\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 Lucas Magnum 15W-40 safe for older diesel engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it’s formulated for older engines with wider tolerances, helping control soot and extend drain intervals when used per manufacturer guidance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this oil be used in hydrostatic transmissions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It’s suitable for many hydrostatic transmissions that accept engine oils; verify your equipment manual for compatibility before use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Lucas Oil","offers":[{"title":"Default Title","offer_id":48082973917342,"sku":"B0007ZHASS","price":52.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/lucas-oil-10076-front-label.jpg?v=1785821221","url":"https:\/\/northtrailauto.ca\/products\/lucas-oil-15w-40-magnum-high-tbn-ci-4-heavy-duty-motor-oil-1-gallon-extended-drain-high-temperature-protection","provider":"North Trail Auto","version":"1.0","type":"link"}