{"product_id":"red-line-oilmt-90-manual-trans-lube-1-quart-75w90-gl-4","title":"Red Line Oil MT-90 Manual Transmission Lube 75W90 GL-4 — Synthetic Gear Oil","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Red Line Oil - Archived\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eRed Line Oil - Archived engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Red Line Oil - Archived lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/3Tg4v81mJIQ\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eSmooth Shifting with Red Line MT-90\u003c\/h2\u003e\u003cp\u003eRed Line Oil MT-90 75W90 is the gold standard for manual transmissions requiring a GL-4 gear oil. Designed specifically to improve shift quality in both cold and hot temperatures, this synthetic lubricant is a favorite among performance enthusiasts and daily drivers alike. Its unique chemistry provides the perfect balance of friction reduction and synchronizer protection.\u003c\/p\u003e\u003ch3\u003eWhy Choose MT-90?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Shift Feel:\u003c\/strong\u003e Specifically formulated to provide smoother gear changes in manual transmissions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGL-4 Protection:\u003c\/strong\u003e Safe for yellow metals like brass and bronze found in synchros.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Stability:\u003c\/strong\u003e Resists breakdown under high-stress driving conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSynthetic Performance:\u003c\/strong\u003e Superior flow characteristics compared to conventional mineral-based oils.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eMT-90 is engineered to reduce gear noise and provide long-lasting protection for your transmission internals. By maintaining a stable viscosity, it ensures that your transmission remains responsive regardless of the operating environment. If you are experiencing notchy shifts or want to prolong the life of your gearbox, this synthetic fluid is the ideal upgrade. Trust in the quality of Red Line Oil to keep your vehicle performing at its best. Find all your essential automotive fluids and maintenance supplies at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Red Line Oil - Archived products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/red-line-oil5wt-race-oil-quart\" style=\"color:#0066cc;text-decoration:none;\"\u003eRed Line Oil 5WT Drag Race Synthetic Motor Oil — 1 Quart Bottle\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/red-line-oil10wt-race-oil-quart\" style=\"color:#0066cc;text-decoration:none;\"\u003eRed Line Oil 10WT Drag Race Synthetic Motor Oil — 1 Quart Bottle\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/red-line-oil10wt-race-oil-1-gallon\" style=\"color:#0066cc;text-decoration:none;\"\u003eRed Line Oil 10WT Drag Race Synthetic Motor Oil — 1 Gallon Jug\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/red-line-oil20wt-race-oil-1-qt-5w20\" style=\"color:#0066cc;text-decoration:none;\"\u003eRed Line Oil 20WT Race Oil 5W20 Synthetic Motor Oil — 1 Quart Bottle\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/red-line-oil30wt-race-oil-1-qt-10w30\" style=\"color:#0066cc;text-decoration:none;\"\u003eRed Line Oil 30WT Race Oil 10W30 Synthetic Motor Oil — 1 Quart Bottle\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Red Line Oil MT-90 Manual Transmission Lube 75W90 GL-4 \\u2014 Synthetic Gear Oil\",\"description\":\"Improve your manual transmission shifting with Red Line Oil MT-90 75W90. High-performance GL-4 synthetic gear oil for smoother gear changes. Shop GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Red Line Oil - Archived\"},\"mpn\":\"RED50304\",\"url\":\"https:\/\/ggcracing.com\/products\/red-line-oilmt-90-manual-trans-lube-1-quart-75w90-gl-4\",\"offers\":{\"@type\":\"Offer\",\"price\":\"23.10\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/red-line-oilmt-90-manual-trans-lube-1-quart-75w90-gl-4\",\"sku\":\"FJFN_RED50304\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Red Line Oil - Archived\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Red+Line+Oil+-+Archived\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Red Line Oil MT-90 Manual Transmission Lube 75W90 GL-4 \\u2014 Synthetic Gear Oil\",\"item\":\"https:\/\/ggcracing.com\/products\/red-line-oilmt-90-manual-trans-lube-1-quart-75w90-gl-4\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Red Line Oil MT-90 Manual Transmission Lube 75W90 GL-4 \\u2014 Synthetic Gear Oil fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Red Line Oil - Archived?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Red Line Oil MT-90 Manual Transmission Lube 75W90 GL-4 \\u2014 Synthetic Gear Oil?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Red Line Oil - Archived","offers":[{"title":"Default Title","offer_id":41124420419668,"sku":"FJFN_RED50304","price":23.1,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/RED50304.jpg?v=1717410523","url":"https:\/\/ggcracing.com\/en-co\/products\/red-line-oilmt-90-manual-trans-lube-1-quart-75w90-gl-4","provider":"GGCRACING INC","version":"1.0","type":"link"}