{"product_id":"zerex-extended-life-antifreeze-coolant-50-50-red-1-gal-heavy-duty-oat-corrosion-protection","title":"Zerex Extended Life Antifreeze\/Coolant 50\/50 Red 1 Gal — Heavy-Duty OAT Corrosion Protection","description":"\u003cp\u003e\u003cstrong\u003eZerex Extended Life Red Heavy Duty 50\/50 is a prediluted, ready-to-use antifreeze\/coolant formulated to protect heavy-duty diesel and gasoline engines from corrosion, cavitation, freeze and boil-over.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEngine cooling systems in commercial trucks, construction equipment, marine vessels and stationary power units face aggressive operating conditions that demand a long-lasting coolant. Zerex Heavy Duty Extended Life Red uses Organic Acid Technology (OAT) and high-grade virgin ethylene glycol to deliver corrosion resistance and thermal protection without the need for supplemental coolant additives when used as directed.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Zerex Extended Life Red protect heavy-duty engines?\u003c\/h3\u003e\n\u003cp\u003eThis formula is designed with inhibitors that guard against pitting, cavitation and corrosion on critical cooling system metals, including aluminum. Its OAT chemistry forms a protective film on metal surfaces to reduce metal loss and scale formation, helping maintain coolant flow and heat transfer efficiency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOAT inhibitors reduce galvanic corrosion and cavitation damage\u003c\/li\u003e\n  \u003cli\u003eProtects aluminum, cast iron and other cooling system metals\u003c\/li\u003e\n  \u003cli\u003eHelps prevent hard-water scale and rust build-up\u003c\/li\u003e\n  \u003cli\u003eMaintains heat transfer and coolant flow under heavy loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the product ready to use, and how does the 50\/50 mixture help?\u003c\/h3\u003e\n\u003cp\u003eZerex Extended Life Red comes pre-mixed 50\/50 with deionized water, eliminating dilution guesswork and ensuring consistent freeze and boil-over protection straight from the jug. The balanced mix prevents freezing in cold conditions and raises boil-over temperature for high-heat, heavy-duty operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReady-to-pour 50\/50 ratio for immediate use\u003c\/li\u003e\n  \u003cli\u003eDeionized water reduces mineral deposits and scale formation\u003c\/li\u003e\n  \u003cli\u003ePrevents freezing and increases boiling point for varied climates\u003c\/li\u003e\n  \u003cli\u003eSaves time during service and reduces mixing errors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long will this coolant last in service and what maintenance is required?\u003c\/h3\u003e\n\u003cp\u003eWhen used following label instructions, Zerex Extended Life Red is formulated to provide up to three years of protection or 30,000 miles, or up to 7,000 hours of operation, without supplemental coolant additives. Regular system checks—coolant level, concentration verification and periodic system flushing—help sustain performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGuaranteed up to 3 years \/ 30,000 miles \/ 7,000 hours when used per directions\u003c\/li\u003e\n  \u003cli\u003eNo supplemental coolant additives required when specifications are followed\u003c\/li\u003e\n  \u003cli\u003ePeriodic checks recommended: level, visual condition, and concentration\u003c\/li\u003e\n  \u003cli\u003eFlush and refill schedules depend on vehicle manufacturer guidance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this product work in non-diesel applications like marine or gasoline engines?\u003c\/h3\u003e\n\u003cp\u003eYes. Although optimized for heavy-duty diesel engines (Cummins, DDC, MACK, Navistar, Paccar, Volvo), the formulation is compatible with many gasoline engines, marine systems, natural gas engines and light-duty applications. Always cross-reference equipment manuals to confirm compatibility with OEM recommendations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for select gasoline, marine and stationary power systems\u003c\/li\u003e\n  \u003cli\u003eCompatible with a wide range of engine metals without harming seals or hoses\u003c\/li\u003e\n  \u003cli\u003eConsult OEM specifications for systems with specialized coolant requirements\u003c\/li\u003e\n  \u003cli\u003eNot intended for use with coolants requiring different inhibitor technologies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Zerex Extended Life Red Heavy Duty 50\/50 is intended for fleet managers, diesel technicians, equipment owners and operators who need a dependable, long-life coolant for heavy-duty trucks, vocational equipment, marine engines and industrial power units. Choose this product when you want a factory-ready, OAT-based antifreeze\/coolant in a convenient one-gallon prediluted format that reduces service time and helps protect critical cooling system components under demanding conditions.\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 Zerex Extended Life Red be mixed with other coolants?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Mixing with different inhibitor technologies is not recommended; follow OEM guidance or fully flush before switching to avoid performance loss.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this coolant require supplemental additives?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No supplemental coolant additives are needed when used as directed and within the specified service intervals.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Zerex","offers":[{"title":"Default Title","offer_id":48086820421790,"sku":"B0011E91K4","price":29.73,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/zerex-front-label-1-gallon.jpg?v=1785906581","url":"https:\/\/northtrailauto.ca\/products\/zerex-extended-life-antifreeze-coolant-50-50-red-1-gal-heavy-duty-oat-corrosion-protection","provider":"North Trail Auto","version":"1.0","type":"link"}