--- product_id: 257386190 title: "50104 75W85 GL-5 Full Synthetic Gear Oil For Hypoid Limited Slip Differentials - 1 Quart" brand: "red line" price: "¥14456" currency: JPY in_stock: true reviews_count: 5 url: https://www.desertcart.jp/products/257386190-50104-75w85-gl-5-full-synthetic-gear-oil-for-hypoid store_origin: JP region: Japan --- # Full synthetic ester base for extreme temp stability 75W85 viscosity for optimal gear protection Friction modifiers for clutch-type LSDs 50104 75W85 GL-5 Full Synthetic Gear Oil For Hypoid Limited Slip Differentials - 1 Quart **Brand:** red line **Price:** ¥14456 **Availability:** ✅ In Stock ## Summary > ⚙️ Shift to the future with Red Line’s ultimate synthetic gear oil! ## 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?** ¥14456 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/257386190-50104-75w85-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 - • **Universal Compatibility:** Meets or exceeds API GL-5, GL-6, MT-1 specs and fits a wide range of late-model vehicles from BMW to Toyota, making it the go-to gear oil for discerning drivers. - • **Extended Drain Intervals:** Advanced synthetic chemistry reduces wear and oxidation, meaning longer service life and fewer oil changes—maximize uptime and minimize hassle. - • **Precision Viscosity Control:** Engineered SAE 75W85 viscosity ensures consistent lubrication across temperature extremes, protecting your gears under all conditions. - • **LSD-Ready Friction Modifiers:** Built-in friction modifiers optimize limited slip differential performance—no extra additives needed, ensuring smooth, confident handling. - • **Race-Proven Synthetic Formula:** Polyol ester base stocks deliver superior shear stability and oxidation resistance, trusted by Formula racing and high-performance vehicles alike. ## Overview Red Line 50104 is a full synthetic 75W85 GL-5 gear oil formulated with polyol ester base stocks and friction modifiers designed specifically for hypoid limited slip differentials. It offers superior shear stability, oxidation resistance, and consistent viscosity across temperature ranges, making it ideal for high-performance and late-model vehicles. Trusted in both street and racing applications, it extends gear life, improves differential efficiency, and requires no additional friction modifiers for most LSDs. ## Description These products contain the extreme pressure additives necessary for ultimate protection road cars and racing vehicles, as well as friction modifiers for proper limited-slip operation. Fully-synthetic formulas created from polyol ester base stocks, offer excellent lubrication under extreme conditions High viscosity-index (VI) to provide relatively constant viscosity and film thickness with varying temperature change. Ester base stocks and friction modifiers provide additional slipperiness to lower operating temperatures by reducing the sliding friction in hypoid gears Details: Superior shear stability and reduced oxidation compared to other synthetics and conventional gear oils Exceed API GL-5 specifications Engineered to provide the highest degree of protection and improvement of differential efficiency for better mileage, longer drain intervals, and less wear Popular in many late models: BMW, Dodge, Ford Focus RS, Jeep, Mercedes-Benz differential, Toyota light truck, Lexus differential and transfer case Contains additional friction modifiers for suitability with clutch type limited slip differentials for most LSDs, no additional friction modifiers are required This product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems Known formerly as Light Weight Gear Oil Also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential Satisfies the gear oil viscosity requirements of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil Recommended for API GL-5, GL-6, MT-1, MIL-L2105E and SAE J2360 API Service Class GL 5 Plus SAE Viscosity Grade (Gear Oil) 75W85 Vis at 100 degrees C, CSt 11.5 Vis at 40 degrees C, CSt 68 Viscosity Index 163 Pour Point, degrees C neg 45 Pour Point, degrees F neg 49 Brookfield Viscosity, Poise 300 at neg 40 degrees C ## 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 | #41,436 in Automotive (See Top 100 in Automotive) #530 in Automotive Oils | | Brand Name | Red Line | | Container Type | Bottle | | Customer Reviews | 4.9 4.9 out of 5 stars (907) 4.9 out of 5 stars | | Global Trade Identification Number | 00083522501040 | | Included Components | 75W85 GL-5, Full Synthetic Gear Oil | | Item Form | Oil | | Item Type Name | ENGINE OIL | | Item Weight | 907 g | | Liquid Volume | 32 Fluid Ounces | | Manufacturer | Red Line | | Material | Synthetic | | Model Number | RED50104 | | Number Of Items | 1 | | Number Of Packs | 1 | | Part Number | 50104 | | Recommended Uses For Product | Vehicle | | Specific Uses For Product | Vehicle | | Unit Count | 946.35 Milliliters | | Upc | 083522501040 | | Viscosity | Lightweight | | 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) ## Available Options This product comes in different **Size** options. ## 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 ### ⭐⭐⭐⭐⭐ Rear diff oil *by on Reviewed in the United Kingdom 10 October 2022* I chose red line as it has the friction modifier already added which was perfect for my Mk3 focus rs. Great product Great delivery time.Very Happy 👌🏻😎🤪 ### ⭐⭐⭐⭐⭐ Perfect *by on Reviewed in the United States 11 July 2026* Got this for my severely overdue rear diff on my 19 Tacoma. Only driven about 100 miles since I changed the fluid with this stuff but it immediately got rid of my differential whine. I bought a pump on Amazon as well to pump it into my diff since it doesn't have a nozzle.Lots of people recommended this specifically. Little on the pricier side but you get what you pay for. I will continue to use this for my diff fluid changes. ### ⭐⭐⭐⭐⭐ Super *by on Reviewed in Saudi Arabia 16 April 2022* it is the correct product with all the amazing quality for my Jeep 2017 Grand Cherokee Laredo differential ## 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.jp/products/257386190-50104-75w85-gl-5-full-synthetic-gear-oil-for-hypoid](https://www.desertcart.jp/products/257386190-50104-75w85-gl-5-full-synthetic-gear-oil-for-hypoid) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-16*