--- product_id: 6635153 title: "50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart" brand: "red line" price: "239.29 DT" currency: TND in_stock: true category: "Red Line" url: https://www.desertcart.tn/products/6635153-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil store_origin: TN region: Tunisia --- # GL-4 Synchro-safe formula Cold climate smooth shifts Optimized for high-performance manuals 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart **Brand:** red line **Price:** 239.29 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?** 239.29 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/6635153-50504-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 - • **Versatile Compatibility:** Ideal for Nissan 350Z/370Z, Mitsubishi Evolution, Hyundai, Kia, and Quaife synchro manual transmissions. - • **Premium Polyol Ester Base:** Advanced synthetic formula delivers unmatched durability and protection under extreme conditions. - • **Proven High-Performance Legacy:** Trusted by enthusiasts since 1979 for superior gear and synchro life extension. - • **Synchro-Friendly GL-4 Protection:** Preserves brass synchros by avoiding harmful reactive sulfurs found in GL-5 oils. - • **Effortless Shifting in Any Weather:** Balanced friction control ensures quicker, smoother gear changes even in freezing temperatures. ## Overview Red Line 50504 MT-85 75W85 GL-4 Gear Oil is a premium synthetic transmission fluid engineered for manual gearboxes requiring GL-1, GL-3, or GL-4 specs. It offers superior protection for brass synchros, ensures smoother shifting in cold climates, and extends transmission life. Perfectly suited for performance vehicles like Nissan 350Z/370Z, Mitsubishi Evolution, and more, this 1-quart bottle delivers trusted, race-proven reliability since 1979. ## Description Buy Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart: Motor 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, 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 | #20,588 in Automotive ( See Top 100 in Automotive ) #340 in Motor Oils | | Brand Name | Red Line | | Container Type | Bottle | | Customer Reviews | 4.8 4.8 out of 5 stars (893) | | Global Trade Identification Number | 00083522505048 | | Included Components | (1063027) MT-85 75W85 GL-4 GEAR OIL - QUART | | Item Form | Fluids,Oil | | Item Type Name | ENGINE OIL | | Item Weight | 2 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 | Vehicle | | 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 | 32.0 Fluid Ounces | | Viscosity | 5w-30 | | Warranty Description | LIMITED WARRANTY | ## Product Details - **Brand:** Red Line - **Item Weight:** 2 Pounds - **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/6635153-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil](https://www.desertcart.tn/products/6635153-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-11*