{"product_id":"castrol-classic-st-90-gear-oil-1-litre","title":"Castrol Classic ST 90 Gear Oil - 1 Litre","description":"\u003ch2\u003eCastrol Classic ST 90 Gear Oil - 1 Litre: Essential Protection for Vintage Gearboxes (API GL-3)\u003c\/h2\u003e\n\u003cp\u003eEnsure the enduring performance and mechanical harmony of your classic vehicle's transmission and differential with \u003cb\u003eCastrol Classic ST 90 Gear Oil\u003c\/b\u003e. \u003cspan class=\"citation-869\"\u003eThis \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-869\"\u003ehigh-quality, mono-grade mineral gear oil\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-869 citation-end-869\"\u003e (SAE 90) is precisely engineered with anti-oxidant and anti-wear additives, providing vital protection for gear teeth in gearboxes and axles.\u003csup class=\"superscript\" data-turn-source-index=\"1\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003cspan class=\"citation-868 citation-end-868\"\u003eIt's an indispensable choice for a broad spectrum of vintage applications where a non-EP (Extreme Pressure) gear oil is specified.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"source-inline-chip-container ng-star-inserted\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOptimized for Classic Transmissions (API GL-3):\u003c\/b\u003e\u003cspan class=\"citation-867 citation-end-867\"\u003e Specifically formulated to meet the lubrication demands of older gearbox systems, offering appropriate protection without aggressive EP additives harmful to vintage components.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"source-inline-chip-container ng-star-inserted\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSuperior Wear Defense:\u003c\/b\u003e\u003cspan class=\"citation-866 citation-end-866\"\u003e Contains advanced anti-oxidant and anti-wear additives to effectively protect gear teeth against premature wear, extending the operational life of crucial transmission and differential parts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"source-inline-chip-container ng-star-inserted\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eYellow Metal Safe:\u003c\/b\u003e\u003cspan class=\"citation-865\"\u003e Meticulously designed for safe compatibility with sensitive \"yellow metals\" like \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-865\"\u003ebrass and bronze\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-865 citation-end-865\"\u003e, commonly found in classic vehicle synchronizers and bearings, preventing corrosion and damage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"source-inline-chip-container ng-star-inserted\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBroad Application Suitability:\u003c\/b\u003e\u003cspan class=\"citation-864\"\u003e Ideal for a wide array of gear types, including \u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-864\"\u003ehelical, spur, bevel, and worm gears\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-864 citation-end-864\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"source-inline-chip-container ng-star-inserted\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"citation-863\"\u003e\u003c\/span\u003e\u003cb\u003e\u003cspan class=\"citation-863\"\u003ePerfect for Straight Cut Gears:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-863 citation-end-863\"\u003e An excellent choice for vehicles featuring straight cut gears, ensuring optimal performance and protection.\u003csup class=\"superscript\" data-turn-source-index=\"7\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAuthentic Specification Match:\u003c\/b\u003e\u003cspan class=\"citation-862 citation-end-862\"\u003e The recommended lubricant where \"Castrol Swanshot\" was originally specified, upholding the vehicle's authentic performance characteristics.\u003csup class=\"superscript\" data-turn-source-index=\"8\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAddresses Historical Wear:\u003c\/b\u003e\u003cspan class=\"citation-861 citation-end-861\"\u003e Its formulation is particularly beneficial for older vehicles that may have experienced prior wear, helping to minimize further degradation and support continued smooth operation.\u003csup class=\"superscript\" data-turn-source-index=\"9\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eLegacy of Excellence:\u003c\/b\u003e Backed by over a century of Castrol's unparalleled expertise in developing transmission fluids, this product is part of a trusted range that has served as factory-fill and is crucial for maintaining vintage vehicle specifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAdhere to Original Recommendations:\u003c\/b\u003e Empowers classic vehicle owners to faithfully follow the manufacturer's original handbook recommendations, preserving the authenticity and peak performance of their cherished automobile\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castrol","offers":[{"title":"Default Title","offer_id":40930086584378,"sku":"1803\/7199\/1","price":20.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/4846\/2650\/files\/Castrol-Classic-ST-90-Gear-Oil-1-Litre-1.webp?v=1751590181","url":"https:\/\/sierramadrecollection.com\/products\/castrol-classic-st-90-gear-oil-1-litre","provider":"Sierra Madre Collection","version":"1.0","type":"link"}