{"product_id":"castrol-gtx-full-synthetic-5w-30-motor-oil-5-quarts-full-synthetic-protection-up-to-10-000-miles","title":"Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts — Full-synthetic protection up to 10,000 miles","description":"\u003cp\u003e\u003cstrong\u003eCastrol GTX Full Synthetic 5W-30 is a premium engine oil engineered to protect modern gasoline engines from wear, sludge and viscosity breakdown while supporting extended oil-change intervals up to 10,000 miles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for motorists who demand durable engine protection, this Castrol GTX formulation combines advanced detergency, anti-wear chemistry and thermal stability to address the stresses of everyday driving and severe conditions. It meets or exceeds current industry and OEM specifications including API SQ\/SP\/SN PLUS\/SN and ILSAC GF-7, and is compatible with several GM and Ford requirements. The result is a full-synthetic 5W-30 designed to clean away existing sludge, prevent new sludge formation, and maintain viscosity control under heat.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Castrol GTX Full Synthetic 5W-30 defend against engine wear?\u003c\/h3\u003e\n\u003cp\u003eThis oil uses specially balanced anti-wear additives to form a protective film over critical engine surfaces, reducing metal-to-metal contact under load. Laboratory testing shows substantially better wear protection than industry minimums, helping preserve engine components over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e6X better wear protection on critical parts compared with industry standards (Sequence IVA test)\u003c\/li\u003e\n  \u003cli\u003eOptimized additive package for piston ring and camshaft protection\u003c\/li\u003e\n  \u003cli\u003eStable film strength at high temperatures to reduce friction-related wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it keep my engine free of sludge and deposits?\u003c\/h3\u003e\n\u003cp\u003eCastrol GTX Full Synthetic is formulated with detergents and dispersants designed to remove existing sludge in engines with high deposits and to inhibit new sludge formation. Independent sequence tests show measurable improvement versus API limits for sludge control.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1.3X better sludge protection than API SP limits (Sequence VH sludge test)\u003c\/li\u003e\n  \u003cli\u003eActive detergents that break down and suspend contaminants for easier oil filtration\u003c\/li\u003e\n  \u003cli\u003eHelps maintain cleaner oil passages and valve areas for consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow stable is the oil’s viscosity during long drives and high heat?\u003c\/h3\u003e\n\u003cp\u003eThis formulation resists viscosity breakdown so the oil retains protective thickness through extended service and under thermal stress. That means consistent hydrodynamic protection and reliable oil pressure across a range of operating temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e3X stronger against viscosity breakdown than a leading full synthetic in 5W-30 grade\u003c\/li\u003e\n  \u003cli\u003eDesigned for robust shear stability over extended mileage\u003c\/li\u003e\n  \u003cli\u003eRecommended for up to 10,000 miles between oil changes when following vehicle manufacturer guidance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this oil compatible with my vehicle and industry standards?\u003c\/h3\u003e\n\u003cp\u003eYes — Castrol GTX Full Synthetic 5W-30 meets multiple modern specifications and OEM requirements, making it suitable for many gasoline engines. Always check your vehicle owner’s manual for the manufacturer’s recommended viscosity and approvals before use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets or exceeds API SQ\/SP\/SN PLUS\/SN and ILSAC GF-7\u003c\/li\u003e\n  \u003cli\u003eApproved for GM dexos1 Gen 3 and meets Ford WSS-M2C947-B1 and WSS-M2C962-A1\u003c\/li\u003e\n  \u003cli\u003eSuitable for many late-model passenger cars and light trucks calling for 5W-30 full synthetic oils\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers who want a full-synthetic 5W-30 that emphasizes long-lasting wear protection, strong sludge control and excellent viscosity stability. Ideal for daily commuters, highway drivers, and owners of modern gasoline vehicles that require API SP or ILSAC GF-7 performance and OEM approvals. If you prioritize engine cleanliness, protection under stress, and the option for extended change intervals when permitted by your vehicle manufacturer, Castrol GTX Full Synthetic 5W-30 is engineered to fit those needs.\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 use Castrol GTX Full Synthetic 5W-30 in turbocharged engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s formulated for modern gasoline engines including many turbocharged units, but always confirm the manufacturer’s recommended oil grade and approvals first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long can I go between oil changes with this product?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This oil supports up to 10,000 miles between changes when aligned with your vehicle maker’s interval guidance and driving conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Castrol","offers":[{"title":"Default Title","offer_id":48086338044062,"sku":"B09M982T3B","price":49.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/castrol-gtx-full-synthetic-5w30-front-packaging.jpg?v=1785895506","url":"https:\/\/northtrailauto.ca\/products\/castrol-gtx-full-synthetic-5w-30-motor-oil-5-quarts-full-synthetic-protection-up-to-10-000-miles","provider":"North Trail Auto","version":"1.0","type":"link"}