--- product_id: 715725616 title: "50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)" brand: "red line" price: "1585.74 DT" currency: TND in_stock: true reviews_count: 5 category: "Red Line" url: https://www.desertcart.tn/products/715725616-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle store_origin: TN region: Tunisia --- # Perfect friction coefficient for quicker shifts 75W-90 viscosity for optimal gear protection GL-4 safe formula protects brass synchros 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack) **Brand:** red line **Price:** 1585.74 DT **Availability:** ✅ In Stock ## Summary > ⚙️ Shift Smarter, Drive Stronger — The Ultimate Manual Transmission Ally ## Quick Answers - **What is this?** 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack) by red line - **How much does it cost?** 1585.74 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/715725616-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle) ## Best For - red line enthusiasts ## Why This Product - Trusted red line brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted Compatibility:** Meets GL-1, GL-3, and GL-4 specs, safe for brass synchros—no corrosive sulfurs. - • **Proven Industry Leader:** Red Line’s legacy since 1979 ensures uncompromising quality and performance. - • **Engineered for Longevity:** High-performance gear protection extends synchro and transmission life. - • **Smooth Shifts, Every Time:** Eliminates notchy shifting even in cold starts for seamless gear changes. - • **Precision Friction Balance:** Perfect synchronizer coefficient of friction enables high-speed downshifting without wear. ## Overview Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission lubricant designed to deliver smoother, quicker shifts and superior gear protection. Its unique formula eliminates notchy shifting and gear noise, even at low temperatures, while safeguarding brass synchronizers from corrosion. Trusted by professionals since 1979, this lubricant meets multiple gear oil standards and is ideal for manual transmissions and transaxles requiring GL-1, GL-3, or GL-4 oils. ## Description Red Line MT-90 Manual Transmission Lubricant A 75W90 GL-4 gear oil (SAE 10W/15W/40 engine oil viscosity) designed for use in manual transmissions and trans-axles. Red Line MT-90 Manual Transmission Lubricant provides excellent protection of gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting. Red Line MTL / MT-90 BENEFIT SUMMARY * Eliminates notchy shifting * Designed for manual transmissions and trans-axles * Perfect synchronizer coefficient of friction * Enables high-speed downshifting * Excellent shifting even when cold * Eliminates gear whine and rattle at high temperatures * High-performance gear protection * Non-corrosive toward synchronizers * Satisfies manual transmissions and trans-axles requiring motor oils or GL-1, GL-3, or GL-4 gear oils. Review: made shifting smoother Review: ちょうどいい量でした。 - 私の車は2.6L入るので３本で使い切りれました。 ## 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 | B000QFN326 | | Best Sellers Rank | #11,164 in Automotive ( See Top 100 in Automotive ) #19 in Automotive Transmission Fluids | | Brand | Red Line | | Brand Name | Red Line | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 2,717 Reviews | | Included Components | (1063017) MT-90 75W90 GL-4 - QUART | | Item Form | Oil | | Item Type Name | ENGINE OIL | | Item Weight | 907 g | | Item weight | 907 g | | Liquid Volume | 128 Fluid Ounces | | Liquid volume | 128 Fluid Ounces | | Manufacturer | RED LINE | | Material | Oil | | Package information | Bottle | | Recommended Uses For Product | Manual Transmissions | | Recommended uses for product | Manual Transmissions | | Specific Uses For Product | Prevent Corrosion | | Unit Count | 128 Fluid Ounces | | Viscosity | 75W-90 | ## Product Details - **Brand:** Red Line - **Item weight:** 2 Pounds - **Liquid volume:** 128 Fluid Ounces - **Material:** Oil - **Package information:** Bottle ## Images ![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/51zz0TuOOUL.jpg) ## Available Options This product comes in different **Size, Number Of Items** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ made shifting smoother *by L***N on 20 February 2019* ### ⭐⭐⭐⭐⭐ ちょうどいい量でした。 *by A***ー on 1 June 2024* 私の車は2.6L入るので３本で使い切りれました。 ### ⭐⭐⭐⭐⭐ Worth changing to this oil *by M***L on 10 August 2017* ## 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 (2 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.tn/products/715725616-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle](https://www.desertcart.tn/products/715725616-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-09*