--- product_id: 7601045 title: "Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)" brand: "red line oil" price: "€ 238.47" currency: EUR in_stock: true category: "Red Line" url: https://www.desertcart.fr/products/7601045-red-line-50304-mt-90-75w-90-gl-4-manual store_origin: FR region: France --- # Faster, smoother shifts even in cold temps 75W-90 viscosity for optimal gear protection Safe on brass synchros, no corrosive sulfurs Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack) **Brand:** red line oil **Price:** € 238.47 **Availability:** ✅ In Stock ## Summary > ⚙️ Shift smarter, drive smoother — the ultimate gear oil upgrade! ## Quick Answers - **What is this?** Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack) by red line oil - **How much does it cost?** € 238.47 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/7601045-red-line-50304-mt-90-75w-90-gl-4-manual) ## Best For - red line oil enthusiasts ## Why This Product - Trusted red line oil brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted Legacy:** Red Line’s proven performance since 1979 keeps your transmission running elite - • **Brass-Safe Formula:** No reactive sulfurs means zero damage to sensitive synchros - • **Versatile Compatibility:** Ideal for GL-1, GL-3, and GL-4 applications—one oil to rule them all - • **Precision Gear Protection:** Extends synchro life with high-performance GL-4 formula - • **Seamless Shifting Experience:** Eliminates notchy shifts for buttery smooth gear changes ## Overview Red Line 50304 MT-90 is a premium synthetic 75W-90 GL-4 manual transmission and transaxle lubricant designed to protect gears and extend synchronizer life. Its unique formula ensures quicker, smoother shifts even in cold conditions while being safe for brass synchros by eliminating harmful reactive sulfurs. Trusted since 1979, this 4-pack quart set is perfect for GL-1, GL-3, and GL-4 applications, delivering top-tier performance and reliability for discerning automotive enthusiasts. ## Description Buy Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack): Gear Oils - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - HIGH PERFORMANCE - gear protection and longer synchro life. Recommended for GL-1, GL-3, and GL-4 applications. - QUICKER SHIFTS - perfect synchronizer coefficient of friction and eliminates notchy shifting, even when cold - REQUIREMENTS - gear oil viscosity of 75W; 80W; SAE 40 10W40 and 15W40 motor oil - POPULAR GEAR OIL FOR - GL-1, GL-3 and GL-4 applications, as well as where most special synchromesh fluids are specified. Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage - WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003P550IE | | Best Sellers Rank | #37,466 in Automotive ( See Top 100 in Automotive ) #64 in Gear Oils | | Brand Name | Red Line Oil | | Compatible Material | Brass | | Container Type | Bottle | | Customer Reviews | 4.8 4.8 out of 5 stars (443) | | Item Form | Fluids,Oil | | Liquid Volume | 128 fluid ounces | | Manufacturer | Red Line | | Material | Synthetic | | Model Number | 50304 | | Number of Items | 4 | | Number of Packs | 4 | | Part Number | 50304 | | Recommended Uses For Product | Gear Oil | | SAE J300 Viscosity Grade | 75W-90 | | UPC | 737534816608 | | Unit Count | 128 Fluid Ounces | | Viscosity | 75W90 | ## Product Details - **Brand:** Red Line Oil - **Liquid Volume:** 128 fluid ounces - **Material:** Synthetic - **Package Information:** Bottle - **Recommended Uses For Product:** Gear Oil ## Images ![Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack) - Image 1](https://m.media-amazon.com/images/I/71LJIn7PldL.jpg) ## Frequently Bought Together - Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack) - Slippery Pete - Fluid Pump for Standard Quart Bottles - 8cc per Pump Stroke and 3rd Hand Adapter, Transfer Gear Oil, Transmission and Differential Fluid (28mm) - Red Line 57904 75W90 GL-5 Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart (4 Pack) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.fr/products/7601045-red-line-50304-mt-90-75w-90-gl-4-manual](https://www.desertcart.fr/products/7601045-red-line-50304-mt-90-75w-90-gl-4-manual) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-09-15*