{"product_id":"peak-blue-si-hoat-antifreeze-coolant-concentrate-1-gal-extended-life-for-european-vehicles","title":"PEAK Blue Si‑HOAT Antifreeze\/Coolant Concentrate 1 Gal — Extended Life for European Vehicles","description":"\u003cp\u003e\u003cstrong\u003ePEAK OET Extended Life Blue Concentrate is a silicate-enhanced HOAT antifreeze\/coolant formulated for European vehicles to help prevent corrosion and extend service intervals up to 150,000 miles or 5 years when installed as a complete flush and fill.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for modern cooling systems that need a blue Si-HOAT formula, this 1‑gallon concentrate from PEAK is designed to mix to the proper strength for flushing, filling, or topping off European cars and light trucks. The formulation contains a bittering agent (Denatonium Benzoate) and corrosion inhibitors that protect aluminum heads, radiators, water pumps, and heater cores. Because it is a concentrate, you’ll dilute it according to your vehicle’s specifications so you get the correct freeze\/boil protection and inhibitor levels.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes this coolant suitable for European vehicles?\u003c\/h3\u003e\n\u003cp\u003eThe PEAK OET Extended Life Blue Concentrate is a silicate-enhanced hybrid organic acid technology (Si‑HOAT) formula tailored for brands that specify blue coolant chemistry. It includes inhibitors that address the mixed-metal environments common in European engines and cooling systems. It’s recommended for use with BMW, Jaguar, Volvo, and other marques calling for this type of antifreeze\/coolant.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSi‑HOAT formulation compatible with European OEM requirements\u003c\/li\u003e\n  \u003cli\u003eEngineered to protect aluminum and mixed-metal components\u003c\/li\u003e\n  \u003cli\u003eRecommended for specific European makes like BMW and Jaguar\u003c\/li\u003e\n  \u003cli\u003eContains bittering agent to deter accidental ingestion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does PEAK OET protect the cooling system?\u003c\/h3\u003e\n\u003cp\u003eThis concentrate contains corrosion inhibitors and silicates that form protective films on metal surfaces to reduce rust and erosion. Proper use—installed as part of a full flush and fill—helps maintain inhibitor levels and can extend the interval between coolant services. It also helps keep radiators and heater cores free from damaging deposits when used with good maintenance practices.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrevents rust and corrosion on cooling system components\u003c\/li\u003e\n  \u003cli\u003eSilicates protect aluminum while organic acids guard mixed metals\u003c\/li\u003e\n  \u003cli\u003eHelps prevent scale and deposit buildup when used correctly\u003c\/li\u003e\n  \u003cli\u003eWorks well during both flushing and topping-off operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use the concentrated formula safely and effectively?\u003c\/h3\u003e\n\u003cp\u003eThe product is a concentrate intended to be mixed with water to achieve the correct freeze and boil protection for your climate and vehicle. Always follow the vehicle manufacturer’s dilution recommendations and the product labeling when mixing. If you’re performing a service, a complete flush and refill ensures maximum performance and the manufacturer’s stated protection interval.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMix concentrate with distilled or clean water per vehicle specs\u003c\/li\u003e\n  \u003cli\u003ePerform a complete flush and refill for best inhibitor performance\u003c\/li\u003e\n  \u003cli\u003eUse correct concentration for desired freeze\/boil protection\u003c\/li\u003e\n  \u003cli\u003eDispose of old coolant responsibly at a recycling center\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat service life and compatibility can I expect?\u003c\/h3\u003e\n\u003cp\u003eWhen installed as part of a full flush and fill, PEAK guarantees a service life protection up to 150,000 miles or 5 years per the label instructions. The concentrate is formulated to be compatible with other extended life antifreeze\/coolants, but mixing different chemistries should be avoided unless specifically permitted. For topping off, match the chemistry to what’s already in the system or perform a flush to switch chemistries cleanly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGuaranteed up to 150,000 miles or 5 years with full flush\/fill\u003c\/li\u003e\n  \u003cli\u003eCompatible with other extended life coolants of the same chemistry\u003c\/li\u003e\n  \u003cli\u003eAvoid mixing incompatible coolant chemistries without a flush\u003c\/li\u003e\n  \u003cli\u003eIncludes Denatonium Benzoate to discourage ingestion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: PEAK OET Extended Life Blue Concentrate is aimed at owners and technicians who maintain European cars and light trucks that require a blue Si‑HOAT antifreeze\/coolant. It’s especially useful for service bays, independent shops, and DIYers who perform flush-and-fill services and need a concentrated product to tailor freeze\/boil protection to regional climates while protecting mixed-metal cooling systems.\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 mix this coolant with water straight from the concentrate?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — dilute per your vehicle manufacturer’s recommended ratio to achieve proper freeze\/boil protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this coolant compatible with my BMW or Volvo?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It’s formulated for many European makes requiring a blue Si‑HOAT coolant; check your owner manual to confirm compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PEAK","offers":[{"title":"Default Title","offer_id":48087578181790,"sku":"B08PMZH5ZC","price":40.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/peak-oet-blue-concentrate-front-label.jpg?v=1785926074","url":"https:\/\/northtrailauto.ca\/products\/peak-blue-si-hoat-antifreeze-coolant-concentrate-1-gal-extended-life-for-european-vehicles","provider":"North Trail Auto","version":"1.0","type":"link"}