--- product_id: 2219323 title: "Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart" brand: "redline oil" price: "230.96 DT" currency: TND in_stock: true category: "Red Line" url: https://www.desertcart.tn/products/2219323-red-line-50304-mt-90-75w-90-gl-4-manual store_origin: TN region: Tunisia --- # Friction-optimized for quicker, smoother shifts 75W-90 viscosity for optimal gear protection GL-4 safe formula protects brass synchros Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart **Brand:** redline oil **Price:** 230.96 DT **Availability:** ✅ In Stock ## Summary > ⚙️ Shift into the fast lane with Red Line’s smoothest gear oil yet! ## Quick Answers - **What is this?** Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart by redline oil - **How much does it cost?** 230.96 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/2219323-red-line-50304-mt-90-75w-90-gl-4-manual) ## Best For - redline oil enthusiasts ## Why This Product - Trusted redline oil brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Top-Rated Gear Oil:** Ranked #5 in Gear Oils with 4.9-star reviews from over 5,000 users. - • **Synchro-Friendly Formula:** GL-4 rated and free from reactive sulfurs to extend synchro lifespan. - • **Precision Gear Protection:** Advanced 75W-90 viscosity guards your transmission under all conditions. - • **Trusted Legacy Performance:** Since 1979, Red Line delivers uncompromising quality and reliability. - • **Seamless Shifting Experience:** Engineered friction coefficient eliminates notchy shifts—even in cold starts. ## Overview Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission Lubricant is a premium gear oil designed for manual transmissions and transaxles. It features a perfect friction coefficient for quicker shifts, protects brass synchros by avoiding harmful sulfurs, and meets GL-1, GL-3, and GL-4 specifications. Trusted since 1979, it’s a top-rated choice for professionals seeking durability and performance. ## Description Buy Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart: 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 | B000CPCBEQ | | Best Sellers Rank | #1,988 in Automotive ( See Top 100 in Automotive ) #5 in Gear Oils | | Brand Name | Redline Oil | | Container Type | Bottle | | Customer Reviews | 4.9 4.9 out of 5 stars (5,044) | | Global Trade Identification Number | 00083522503044 | | Included Components | MT-90 75W-90 GL-4 | | Item Form | Fluids,Oil | | Item Type Name | ACCESSORIES | | Item Weight | 1.7 Pounds | | Liquid Volume | 32 Fluid Ounces | | Manufacturer | Yukon Gear & Axle | | Material | Brass | | Model Number | 50304 | | Number of Items | 1 | | Part Number | 50304 | | Recommended Uses For Product | Lubricant,Lube | | SAE J300 Viscosity Grade | 75W-90 | | Specific Uses For Product | Lubricant for manual transmissions and transaxles, Prevent corrosion, Enable smooth shifting, Provide gear protection | | UPC | 083522503044 | | Unit Count | 32.0 Fluid Ounces | | Viscosity | 75W90 | | Warranty Description | LIMITED WARRANTY | ## Product Details - **Brand:** Redline Oil - **Item Weight:** 1.7 Pounds - **Liquid Volume:** 32 Fluid Ounces - **Material:** Brass - **Package Information:** Bottle ## Images ![Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart - Image 1](https://m.media-amazon.com/images/I/71-WkiwXyXL.jpg) ![Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart - Image 2](https://m.media-amazon.com/images/I/81zyln3z-IL.jpg) ![Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart - Image 3](https://m.media-amazon.com/images/I/81eZ7tyT1BL.jpg) ![Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart - Image 4](https://m.media-amazon.com/images/I/81hzhcHUXLL.jpg) ![Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart - Image 5](https://m.media-amazon.com/images/I/81M9Tv+BFuL.jpg) ## Available Options This product comes in different **Size, Number Of Items** options. ## Questions & Answers **Q: Is anyone running this in an NV4500 long term? How does it hold up?** A: I've been running it for 35,000 miles in my 1996 model GM NV4500 without issue. **Q: Do I pour the entire contents directly in? Are there any special instructions?** A: To get maximum benefit of the Red Line you need to replace all the oil in the transmission. For my car, it took 3.4 quarts so I bought four and filled it up until fluid was level with the bottom of the fill plug. If you go to the Red Line website, they have which transmission oil is correct for your car and the capacity of the transmission so you will know how much you will need. **Q: Is this product non-synthetic gl-3?** A: Synthetic gl -4 oil **Q: Can i use on 1992 chevy camaro rs?** A: I would not. It is supposed to be OEM recommended for my 98 vw Cabrio 5speed. So Put $46 worth in and at0°F I could not shift the car until 30 minutes of idling. second Synchromesh was very fussy at 20deg ## Frequently Bought Together - Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart - Red Line 57904 75W90 GL-5 Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart - Slippery Pete - Fluid Pump for Standard Quart Bottles - 8cc per Pump Stroke and 3rd Hand Adapter, Transfer Gear Oil, Transmission and Differential Fluid (28mm) --- ## 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/2219323-red-line-50304-mt-90-75w-90-gl-4-manual](https://www.desertcart.tn/products/2219323-red-line-50304-mt-90-75w-90-gl-4-manual) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-16*