{"product_id":"peak-dex-cool-antifreeze-coolant-for-gm-vehicles-1-gallon-orange-oat-long-life-protection","title":"PEAK DEX-Cool Antifreeze + Coolant for GM Vehicles, 1 Gallon Orange OAT, Long-Life Protection","description":"\u003cp\u003e\u003cstrong\u003ePEAK DEX-Cool® Antifreeze + Coolant is a ready-to-use orange OAT coolant engineered for GM vehicles 1995 and newer, offering long-life corrosion protection and freeze\/boil control.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis 1-gallon PEAK DEX-Cool® container supplies the orange organic acid technology (OAT) formula GM specifies for many of its models. Formulated without amines, phosphates, borates, nitrites, or silicates and fortified with a bittering agent (Denatonium Benzoate), it’s designed to preserve aluminum and other cooling-system metals while delivering up to 10 years or 150,000 miles of service life after a complete flush and fill.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes this coolant suitable for GM vehicles requiring orange OAT formulas?\u003c\/h3\u003e\n\u003cp\u003ePEAK DEX-Cool® matches the chemical profile GM requires for engines specified to use orange OAT coolant. It meets industry and OEM performance standards so it integrates with cooling systems designed around DEX-Cool chemistry without introducing incompatible additives.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets ASTM D3306, D4985 and GMW3420, GM6277M specifications\u003c\/li\u003e\n  \u003cli\u003eDesigned for GM vehicles 1995 and newer needing orange OAT coolant\u003c\/li\u003e\n  \u003cli\u003eFree of amines, phosphate, borate, nitrite and silicate to avoid additive conflicts\u003c\/li\u003e\n  \u003cli\u003eContains Denatonium Benzoate to deter accidental ingestion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does it protect the engine and cooling system metals?\u003c\/h3\u003e\n\u003cp\u003eThis formula forms a protective film on metal surfaces to reduce corrosion, scale and electrochemical wear across the system. It’s especially tuned to safeguard aluminum components commonly used in modern radiators and cylinder heads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInhibits rust and corrosion on aluminum, iron and other metals\u003c\/li\u003e\n  \u003cli\u003eHelps maintain heat transfer efficiency by reducing scale formation\u003c\/li\u003e\n  \u003cli\u003ePromotes stable pH and inhibitor concentration over long service intervals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance interval can I expect after a full flush and fill?\u003c\/h3\u003e\n\u003cp\u003eWhen you perform a complete cooling system flush and fill, PEAK DEX-Cool® is formulated to provide up to 10 years or 150,000 miles of protection under normal operating conditions. Regular coolant checks and system inspections remain important to confirm performance and detect leaks or contamination early.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eService life: up to 10 years \/ 150,000 miles after full flush and fill\u003c\/li\u003e\n  \u003cli\u003eUse with a correctly flushed system to avoid mixing with incompatible coolants\u003c\/li\u003e\n  \u003cli\u003ePeriodic visual checks and coolant testing recommended for fleet or severe-duty use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I mix this coolant with other colors or types?\u003c\/h3\u003e\n\u003cp\u003eThis PEAK DEX-Cool® formula is specifically an OAT (orange) coolant and should not be mixed with coolants that use different inhibitor chemistries (like traditional IAT or some HOAT\/SiOAT types). Mixing incompatible coolants can reduce corrosion protection and shorten expected life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not mix with IAT (green), some HOAT (yellow\/blue) or other incompatible formulas\u003c\/li\u003e\n  \u003cli\u003eIf switching, complete a full system flush to remove residual coolant\u003c\/li\u003e\n  \u003cli\u003eRefer to your vehicle owner’s manual for the OEM-recommended coolant type\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? PEAK DEX-Cool® Antifreeze + Coolant is tailored for owners and technicians of GM vehicles (1995 and newer) that require orange OAT coolant. It’s ideal for routine maintenance, long-term service intervals, and anyone who prefers a factory-compatible, phosphate- and silicate-free formula that prioritizes aluminum protection and industry-standard performance.\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 PEAK DEX-Cool safe for my GM vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it’s formulated for GM vehicles 1995 and newer that specify orange OAT coolant; follow your owner’s manual before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I mix this with other coolant types?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — avoid mixing with incompatible coolants; perform a full system flush before switching to this OAT formula.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PEAK","offers":[{"title":"Default Title","offer_id":48086950903966,"sku":"B0CKG6WZDH","price":33.42,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/peak-dex-cool-front-label.jpg?v=1785910425","url":"https:\/\/northtrailauto.ca\/products\/peak-dex-cool-antifreeze-coolant-for-gm-vehicles-1-gallon-orange-oat-long-life-protection","provider":"North Trail Auto","version":"1.0","type":"link"}