--- product_id: 259376441 title: "Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart." brand: "red line" price: "€ 106.93" currency: EUR in_stock: true reviews_count: 5 category: "Red Line" url: https://www.desertcart.gr/products/259376441-red-line-50304-mt-90-75w-90-gl-4-manual store_origin: GR region: Greece --- # Friction-balanced for quicker, smoother shifts 75W-90 viscosity for optimal gear protection GL-4 rated, safe for brass synchros & long synchro life Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart. **Brand:** red line **Price:** € 106.93 **Availability:** ✅ In Stock ## Summary > ⚙️ Shift into the future with flawless precision! ## Quick Answers - **What is this?** Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart. by red line - **How much does it cost?** € 106.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/259376441-red-line-50304-mt-90-75w-90-gl-4-manual) ## 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 - • **Versatile Compatibility:** Meets GL-1, GL-3, and GL-4 specs—ideal for a wide range of manual transmissions and transaxles. - • **Trusted Legacy Since 1979:** Red Line’s proven formula delivers uncompromising performance and reliability. - • **Smooth High-Speed Downshifts:** Enables confident, precise gear changes under all driving conditions. - • **Ultimate Gear & Synchro Protection:** High-performance synthetic formula extends transmission life and prevents corrosion. - • **Effortless Shifting, Even When Cold:** Perfect synchronizer friction eliminates notchy shifts and gear whine for a seamless drive. ## Overview Red Line MT-90 75W-90 GL-4 Manual Transmission Lubricant is a premium synthetic gear oil designed for manual transmissions and transaxles. It offers superior gear and synchronizer protection, eliminates notchy shifting even in cold conditions, and is compatible with GL-1, GL-3, and GL-4 applications. Trusted since 1979, this lubricant ensures smoother, quieter shifts and longer transmission life for discerning drivers. ## 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 transaxles. 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 transaxles * 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 transaxles requiring motor oils or GL-1, GL-3, or GL-4 gear oils. Review: Good oil - Good oil and GL 4 rated for older cars 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 | B000CPCBEQ | | Best Sellers Rank | #22,905 in Automotive ( See Top 100 in Automotive ) #36 in Automotive Transmission Fluids | | Brand | Red Line | | Brand Name | Red Line | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 2,775 Reviews | | Global Trade Identification Number | 00083522503044 | | Included Components | MT-90 75W-90 GL-4 | | Item Form | Oil | | Item Weight | 771 g | | Item weight | 771 g | | Liquid Volume | 32 Fluid Ounces | | Liquid volume | 32 Fluid Ounces | | Manufacturer | Yukon Gear & Axle | | Material | Synthetic | | Model Number | 50304 | | Number of Items | 1 | | Package information | Bottle | | Part Number | 50304 | | Recommended Uses For Product | Automobile transmission lubrication and maintenance | | Recommended uses for product | Automobile transmission lubrication and maintenance | | 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 Milliliters | | Viscosity | 75W-90 | ## Product Details - **Material:** Brass - **Brand:** Red Line - **Package information:** Bottle - **Liquid volume:** 32 Fluid Ounces - **Item weight:** 771 g ## 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/61iZ6pnD7aL.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) ## 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good oil *by C***E on 26 May 2026* Good oil and GL 4 rated for older cars ### ⭐⭐⭐⭐⭐ 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。 ### ⭐⭐⭐⭐⭐ All ok *by M***S on 9 August 2025* Viskas gerai. ## 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.gr/products/259376441-red-line-50304-mt-90-75w-90-gl-4-manual](https://www.desertcart.gr/products/259376441-red-line-50304-mt-90-75w-90-gl-4-manual) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-08-03*