--- product_id: 257386191 title: "50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart" brand: "red line" price: "359.27 DT" currency: TND in_stock: true category: "Red Line" url: https://www.desertcart.tn/products/257386191-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil store_origin: TN region: Tunisia --- # Safe for brass synchros, prevents corrosion 75W85 GL-4 viscosity for optimal gear protection Enhanced cold climate shifting performance 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart **Brand:** red line **Price:** 359.27 DT **Availability:** ✅ In Stock ## Summary > ⚙️ Shift smarter, not harder — gear oil that keeps you ahead of the pack! ## Quick Answers - **What is this?** 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart by red line - **How much does it cost?** 359.27 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/257386191-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil) ## 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 - • **Brass Synchro Safe:** Formulated without reactive sulfurs to protect sensitive brass components - • **Effortless Shifting:** Balanced friction control ensures quicker, smoother gear changes even in cold weather - • **Legacy of Excellence:** Red Line’s proven performance since 1979 means no compromises on quality or reliability - • **Trusted Compatibility:** Ideal for Nissan 350Z/370Z, Mitsubishi Evolution, Hyundai, Kia, and Quaife manual transmissions - • **Precision Gear Protection:** Extends synchro life with high-performance GL-4 formula ## Overview Red Line 50504 MT-85 75W85 GL-4 Gear Oil is a premium manual transmission lubricant designed for superior gear and synchro protection. Its advanced formula enables quicker shifts, especially in cold climates, while being safe for brass synchros. Trusted by enthusiasts and professionals alike, it’s compatible with a wide range of vehicles including Nissan 350Z/370Z, Mitsubishi Evolution, Hyundai, Kia, and Quaife synchro manuals. Since 1979, Red Line has delivered uncompromising quality and performance. ## Description Red Line Oil 50504 Redline Manual Trans 85 -Qt. Manual transmission gear lube 75W85 GL-4 that offers quicker shifts, improved coefficient of friction, and better gear protection. Also offers better cold shifting and works with high and low mileage vehicles. ## Features - HIGH PERFORMANCE - Gear protection and longer synchro life. Recommended for GL-1, GL-3, and GL-4 applications, as well as where most special synchromesh fluids are specified - OFFERS QUICKER SHIFTS - Excellent gear and synchro protection, balanced friction control & slipperiness for easier shifting even in cold climates - SAFE FOR BRASS SYNCHROS - GL-4 Gear Oil lacks the reactive sulfurs found in most GL-5 oils that cause damage. Recommended for GL-1, GL-3 & GL-4 applications - POPULAR GEA OIL FOR - Nissan 350Z and 370Z (also most Maxima, Altima & Sentra), Mitsubishi Evolution, Hyundai, Kia and Quaife synchro manual trans applications - WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004D4URV6 | | Best Sellers Rank | #42,144 in Automotive ( See Top 100 in Automotive ) #500 in Automotive Oils | | Brand Name | Red Line | | Container Type | Bottle | | Customer Reviews | 4.8 4.8 out of 5 stars (837) | | Global Trade Identification Number | 00083522505048 | | Included Components | (1063027) MT-85 75W85 GL-4 GEAR OIL - QUART | | Item Form | Oil | | Item Type Name | ENGINE OIL | | Item Weight | 1.95 Pounds | | Liquid Volume | 32 Fluid Ounces | | Manufacturer | Red Line | | Material | Polyol Ester | | Model Number | RED50504 | | Number of Items | 1 | | Part Number | 50504 | | Recommended Uses For Product | transmission oil | | SAE J300 Viscosity Grade | 5W-30 | | Specific Uses For Product | Differential oil, final drive oil, gear oil, transfer case fluid, Nissan 350Z and 370Z, Mitsubishi Evolution, Hyundai, Kia, Quaife synchro manual trans applications | | UPC | 083522505048 | | Unit Count | 32 Fluid Ounces | | Viscosity | 75W85 | ## Product Details - **Brand:** Red Line - **Item weight:** 885 g - **Liquid volume:** 32 Fluid Ounces - **Material:** Polyol Ester - **Package information:** Bottle ## Images ![50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart - Image 1](https://m.media-amazon.com/images/I/71eCG2BDySL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart - Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 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) --- ## 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/257386191-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil](https://www.desertcart.tn/products/257386191-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-02*