--- product_id: 7823976 title: "50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart" brand: "red line" price: "$70.02" currency: USD in_stock: true reviews_count: 13 category: "Red Line" url: https://www.desertcart.us/products/7823976-50104-75w85-gl-5-full-synthetic-gear-oil-for-hypoid store_origin: US region: United States of America --- # Full synthetic formula for extreme durability Friction modifiers built-in for limited slip differentials 75W85 viscosity for optimal gear protection 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart **Brand:** red line **Price:** $70.02 **Availability:** ✅ In Stock ## Summary > ⚙️ Shift to the future with Red Line’s ultimate gear oil power! ## Quick Answers - **What is this?** 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart by red line - **How much does it cost?** $70.02 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/7823976-50104-75w85-gl-5-full-synthetic-gear-oil-for-hypoid) ## 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 - • **Proven Compatibility:** Trusted by top automotive brands including BMW, Ford, Lexus, and Mercedes-Benz for reliable differential and transfer case lubrication. - • **Race-Proven Reliability:** Preferred choice in high-performance and Formula racing transaxles, delivering smooth shifts and quieter operation. - • **Advanced Synthetic Formula:** Full synthetic base oil delivers superior film strength and thermal stability for long-lasting protection. - • **Precision Viscosity Control:** Engineered SAE 75W85 viscosity ensures peak performance under all driving conditions. - • **Optimized for Limited Slip Differentials:** Integrated friction modifiers eliminate the need for extra additives, enhancing clutch-type LSD performance. ## Overview Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil is a premium, high-performance lubricant designed specifically for hypoid limited slip differentials. Its advanced synthetic formula with built-in friction modifiers ensures superior protection, quieter operation, and enhanced power delivery across a wide range of vehicles, from luxury brands to race-proven transaxles. ## Description Product description ## Features - SATISFIES REQUIREMENTS - for gear oil viscosity of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil - APPLICATIONS - include differential oil, final drive oil, gear oil and transfer case fluid, this product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems - CONTAINS - additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required, known formerly as LightWeight Gear Oil - POPULAR GEAR OIL FOR - in many late model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram, Toyota, also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential - WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000J3G8KE | | Best Sellers Rank | #2,164 in Automotive ( See Top 100 in Automotive ) #4 in Gear Oils | | Brand | Red Line | | Brand Name | Red Line | | Container Type | Bottle | | Customer Reviews | 4.9 out of 5 stars 1,229 Reviews | | Global Trade Identification Number | 00083522501040 | | Included Components | 75W85 GL-5, Full Synthetic Gear Oil | | Item Form | Oil | | Item Type Name | ENGINE OIL | | Item Weight | 2 Pounds | | Liquid Volume | 32 Fluid Ounces | | Manufacturer | Red Line | | Material | Synthetic | | Model Number | RED50104 | | Number of Items | 1 | | Package Information | Bottle | | Part Number | 50104 | | Recommended Uses For Product | Vehicle | | Specific Uses For Product | Vehicle | | UPC | 083522501040 | | Unit Count | 32.0 Fluid Ounces | | Viscosity | 75W85 | | Warranty Description | LIMITED WARRANTY | ## Product Details - **Brand:** Red Line - **Item Weight:** 2 Pounds - **Liquid Volume:** 32 Fluid Ounces - **Material:** Synthetic - **Package Information:** Bottle ## Images ![50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart - Image 1](https://m.media-amazon.com/images/I/71XbhvbssUL.jpg) ![50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart - Image 2](https://m.media-amazon.com/images/I/71VAiArQ7ZL.jpg) ![50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart - Image 3](https://m.media-amazon.com/images/I/81vtk9-uy5L.jpg) ![50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart - Image 4](https://m.media-amazon.com/images/I/81owXIUH2ML.jpg) ![50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart - Image 5](https://m.media-amazon.com/images/I/81KjZG0DzKL.jpg) ## Questions & Answers **Q: Will it work for a 2007 Tundra 2wd rear dif?** A: I tried this is my 2007 Tacoma Prerunner with the mechanical limited slip diff and the clutches just wouldn't properly slip no matter how much friction modifier I added. I ended up throwing out some good money worth of oil and put cheap Castrol LSD gear oil in it and it worked fine. I don't think this is a bad product, Toyota differentials just do not like synthetic oil in some cases. **Q: Will this work for toyota rav4 awd 2016?** A: Refer to your owners manual. IF the application (transmission/transfer case) states lubricant per GL5 then yes, it will work great. If GL4 then look at Red Line ATF. NOTE: API GL classifications do not go up and down like motor oils (API SN may be used in SL spec engine). GL5 is totally different from GL4 and will damage synchronizer surfaces and or limited slip clutches if not applied correctly. **Q: Will this viscosity provide adequate protection for a 1971 C10 daily driver?** A: I noticed a difference when I changed mine out to this. I just used their mt90 for my manual transmission and it made a huge difference **Q: Lexus gs 350awd says 1.4qt 75w85 for rear and .7qt 80w90 for front diff. can i use this for both? have a bit of 80w90, can just buy 2 bottles.** A: I would recommend staying with the fluid recommended by Lexus. If it were me, I would buy one of each fluid required. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***M on April 3, 2026* ### ⭐⭐⭐⭐⭐ Review *by R***R on October 27, 2025* ### ⭐⭐⭐⭐⭐ Review *by D***S on February 16, 2026* ## Frequently Bought Together - Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart - Red Line 50604 MT-LV 70W/75W GL-4 High-Performance Full Synthetic Gear Oil Lubricant for Manual Transmissions & Transaxles - 1 Quart - 12157-10010 90430-24003 90430-18008 Differential and Transmission/Transfer Case Drain Plug Crush Washers Gaskets Compatible with Toyota 4runner Tacoma Tundra FJ cruiser Land Cruiser --- ## 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.us/products/7823976-50104-75w85-gl-5-full-synthetic-gear-oil-for-hypoid](https://www.desertcart.us/products/7823976-50104-75w85-gl-5-full-synthetic-gear-oil-for-hypoid) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-17*