{"product_id":"valvoline-zerex-g48-antifreeze-concentrate-1-gal-oat-protection-for-aluminum-engines","title":"Valvoline Zerex G48 Antifreeze Concentrate 1 gal — OAT protection for aluminium engines","description":"\u003cp\u003e\u003cstrong\u003eValvoline Zerex G48 Concentrate is a concentrated, extended-life ethylene-glycol antifreeze formulated with organic acids to protect engine cooling systems, including aluminum components.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis one-gallon concentrate from Valvoline (marketed as Zerex G48) is designed for technicians and DIYers who want long-lasting corrosion protection and reliable heat transfer in passenger vehicles and light trucks. Developed with BASF and Valvoline engineering, the hybrid carboxylate formulation uses organic acid technology (OAT) in an ethylene glycol base to guard cooling system metals and help maintain coolant performance over extended service intervals. It’s intended to be mixed with water per vehicle manufacturer recommendations and replaces older technology coolants where compatible.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Zerex G48 protect modern engines?\u003c\/h3\u003e\n\u003cp\u003eZerex G48 combines organic acid inhibitors with a glycol base to create a corrosion-resistant film on metal surfaces, reducing wear and deposit formation. That protective chemistry is suited for aluminum, iron, steel, and soldered joints commonly found in modern cooling systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOrganic acid technology (OAT) for long-term corrosion control\u003c\/li\u003e\n  \u003cli\u003eFormulated to protect aluminum and other common cooling system metals\u003c\/li\u003e\n  \u003cli\u003eConcentrate allows correct water-to-coolant ratio for optimal protection\u003c\/li\u003e\n  \u003cli\u003eHelps reduce scale and deposit buildup when used with proper maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat mixing and service practices should I follow?\u003c\/h3\u003e\n\u003cp\u003eThis product is sold as a concentrate and must be diluted with distilled or demineralized water to achieve the required freeze\/boil protection and inhibitor concentration. Follow your vehicle manufacturer’s coolant specifications and recommended drain\/flush intervals to maximize service life and avoid compatibility issues with other coolant types.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTypical dilution: 50\/50 coolant to water for year-round protection (adjust as needed)\u003c\/li\u003e\n  \u003cli\u003eUse distilled or deionized water to prevent mineral deposits\u003c\/li\u003e\n  \u003cli\u003eFlush the system if switching from different coolant chemistries\u003c\/li\u003e\n  \u003cli\u003eConsult vehicle manual for approved coolant types and service intervals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs Zerex G48 compatible with my vehicle’s coolant system?\u003c\/h3\u003e\n\u003cp\u003eZerex G48 is formulated for compatibility with many modern gasoline and diesel passenger vehicle cooling systems, especially those requiring OAT-type antifreeze. However, it is not universally compatible with all older silicate or hybrid-silicate coolants; a system flush is recommended when changing technologies.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for vehicles specifying OAT or hybrid carboxylate coolants\u003c\/li\u003e\n  \u003cli\u003eNot recommended to mix extensively with older silicate-based coolants\u003c\/li\u003e\n  \u003cli\u003ePerform a system flush when changing coolant chemistry\u003c\/li\u003e\n  \u003cli\u003eCheck vehicle manual or a service advisor for exact compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Mechanics, fleet managers, and car owners who need a concentrated, extended-life antifreeze with strong aluminum protection will find Valvoline Zerex G48 useful. It’s aimed at people who perform routine coolant maintenance and prefer to measure and mix to manufacturer spec rather than buying pre-mixed solutions. If your vehicle’s manufacturer approves OAT-style coolants and you follow dilution and service guidelines, Zerex G48 provides robust corrosion control and heat-transfer performance for longer service intervals.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFeatures: Reliable, Professional, High performance\u003c\/li\u003e\n\u003c\/ul\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: Do I need to dilute Valvoline Zerex G48 before use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Zerex G48 is a concentrate and should be mixed with distilled water—commonly 50\/50—unless your vehicle requires a different ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I mix Zerex G48 with other coolant types?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Mixing with other OAT coolants is sometimes acceptable, but avoid combining extensively with older silicate-based coolants; flush the system when changing chemistries.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Valvoline","offers":[{"title":"Default Title","offer_id":55167099666775,"sku":"B079WZ9DDS","price":61.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/valvoline-zerex-g48-front-label.jpg?v=1790376838","url":"https:\/\/britishgarage.co.uk\/products\/valvoline-zerex-g48-antifreeze-concentrate-1-gal-oat-protection-for-aluminum-engines","provider":"British Garage","version":"1.0","type":"link"}