--- product_id: 63094688 title: "Full Synthetic SAE 75W140 GL-5 Gear/Differential Oil 5 Gallon Pail" brand: "starfire" price: "¥106552" currency: JPY in_stock: true reviews_count: 8 category: "Starfire" url: https://www.desertcart.jp/products/63094688-full-synthetic-sae-75w140-gl-5-gear-differential-oil-5 store_origin: JP region: Japan --- # Withstands up to 300°F heat Meets GL-5 & MT-1 specs Advanced rust & corrosion defense Full Synthetic SAE 75W140 GL-5 Gear/Differential Oil 5 Gallon Pail **Brand:** starfire **Price:** ¥106552 **Availability:** ✅ In Stock ## Summary > ⚙️ Gear up with STARFIRE – where power meets precision! ## Quick Answers - **What is this?** Full Synthetic SAE 75W140 GL-5 Gear/Differential Oil 5 Gallon Pail by starfire - **How much does it cost?** ¥106552 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/63094688-full-synthetic-sae-75w140-gl-5-gear-differential-oil-5) ## Best For - starfire enthusiasts ## Why This Product - Trusted starfire brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Prolongs Gear Life:** High-performance anti-wear agents reduce metal contact and prevent scoring. - • **OEM-Approved Performance:** Exceeds industry standards including MIL-PRF-2105E/D and compatible with top gear systems. - • **Heavy-Duty Gear Protection:** Engineered to endure intense pressure and torque in commercial differentials and axles. - • **Corrosion & Moisture Shield:** Advanced inhibitors form a protective barrier against rust in harsh, wet environments. - • **Unmatched Thermal Stability:** Keeps viscosity steady under extreme heat for smooth, quiet gear operation. ## Overview STARFIRE Full Synthetic SAE 75W140 GL-5 Gear Oil delivers premium protection for heavy-duty differentials and transmissions. Engineered for extreme heat and pressure, it reduces wear, prevents rust, and maintains optimal viscosity for smooth power transfer. Trusted by commercial fleets and exceeding key OEM specs, this 5-gallon pail is the ultimate choice for professionals demanding reliability and performance. ## Description Buy STARFIRE Full Synthetic SAE 75W140 GL-5 Gear/Differential Oil 5 Gallon Pail | Heavy Duty Gear Oil for Differentials and Transmissions – API GL-5, MT-1: Gear Oils - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Delivery problems - Great product, there seems to be a problem having it delivered. Don't know if it leaks or too heavy Review: Excellent product - I replaced the gear oil in my class 8 drive axles with this oil, I have noticed a significant reduction in temperature on highway during high outside temperatures. My axles run about 25* degrees cooler. I am impressed so far. We’ll see how the wear is after about a million miles. ## Features - ENGINEERED FOR MAXIMUM GEAR PROTECTION – STARFIRE 75W-140 synthetic gear oil is built to endure extreme heat, pressure, and torque in heavy-duty differentials, axles, and transmissions for lasting reliability. - EXTREME-PRESSURE PERFORMANCE YOU CAN TRUST – Enhanced with high-performance anti-wear agents, this gear oil reduces metal contact and prevents scoring in hypoid gears and high-load commercial fleet systems. - LONG-TERM RUST & CORROSION DEFENSE – Advanced oxidation and rust inhibitors form a protective barrier on metal surfaces, guarding against moisture damage in severe work environments and wet conditions. - THERMAL & VISCOSITY STABILITY UNDER LOAD – Maintains stable viscosity at high temperatures and resists foaming for smooth, quiet operation—supporting optimal power transfer under heavy-duty workloads. - MEETS KEY INDUSTRY & OEM SPECIFICATIONS – Exceeds GL-5 and MT-1 specs and is compatible with MIL-PRF-2105E/D, Mack GO-J/GO-H, PG-2 Limited Slip, and Volvo i-Shift gear systems used in demanding applications. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01J8I53S8 | | Best Sellers Rank | #152,895 in Automotive ( See Top 100 in Automotive ) #157 in Gear Oils | | Brand | STARFIRE | | Brand Name | STARFIRE | | Compatible Material | Metal | | Container Type | Pail | | Customer Reviews | 4.7 out of 5 stars 90 Reviews | | Global Trade Identification Number | 00810029022033 | | Item Form | Liquid | | Liquid Volume | 5 gallons | | Manufacturer | StarFire Premium Lubricants | | Material | Synthetic | | Model Number | SF F/S 75W140 GL 5 Gallon | | Number of Items | 1 | | Package Information | Pail | | Part Number | SF F/S 75W140 GL 5 Gallon | | Recommended Uses For Product | • API GL-5 • API MT-1 • MIL-PRF-2105E and MIL-PRF-2105D • Mack GO-J, GO-H • PG-2 limited slip differentials Recommended Uses For Product • API GL-5 • API MT-1 • MIL-PRF-2105E and MIL-PRF-2105D • Mack GO-J, GO-H • PG-2 limited slip differentials See more | | SAE J300 Viscosity Grade | 75W-140 | | UPC | 810029022033 | | Unit Count | 640 Fluid Ounces | | Upper Temperature Rating | 300 °F | | Viscosity | 75w140 | ## Product Details - **Brand:** STARFIRE - **Liquid Volume:** 5 gallons - **Material:** Synthetic - **Package Information:** Pail ## Images ![Full Synthetic SAE 75W140 GL-5 Gear/Differential Oil 5 Gallon Pail - Image 1](https://m.media-amazon.com/images/I/81DFQwwNpeL.jpg) ## Questions & Answers **Q: What are the specs? SAE or other.** A: STARFIRE Full Synthetic 75W-90, 75W-140 and 80W-140 Gear Lubricants are suitable for use in the following applications: API GL-5; API MT-1; MIL-PRF-2105E; MIL-PRF-2105D; MACK GO-J, GO-H; PG-2 limited slip differentials; **Q: is this good for limited slip rear differential in ford pick up** A: I'm not sure which Ford spec you require. Please check your manual for the proper fluid recommendations. STARFIRE Full Synthetic 75W-90, 75W-140 and 80W-140 Gear Lubricants are suitable for use in the following applications: • API MT-1 • API GL-5 • MIL-PRF-2105E and MIL PRF 2105D • Mack GO-J, GO-H • PG-2 limited slip differentials **Q: Is this as good as 74W-90 which ised in semi trucks hubs and differentialls? Which one better for bearings?** A: I sell the full synthetic 75w90 to the hub/axle manufacturer. It is used in their heavy-duty axles and differentials. The 75w140 is the same product just a different viscosity grade. **Q: Do you need to add friction modifiers to meet ford rear end specs m2c118-a ?** A: STARFIRE Full Synthetic 75W-90, 75W-140 and 80W-140 Gear Lubricants are suitable for use in the following applications: API GL-5 • API MT-1 • MIL-PRF-2105E and MIL PRF 2105D • Mack GO-J, GO-H • PG-2 limited slip differentials The 75W140, 80W140, 75W90, and 50W products all contain friction modifiers.However, I'm not sure what the requirements of the Ford M2C118-A spec are. It may require more or less friction modifiers. I would not recommend adding anything to an oil--it either meets the requirements of a certain spec or it doesn't. Adding the wrong additive that is not compatible with something else in the formula and it could cause major issues such as fallout, precipitate, or gelling. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Delivery problems *by D***N on November 16, 2025* Great product, there seems to be a problem having it delivered. Don't know if it leaks or too heavy ### ⭐⭐⭐⭐⭐ Excellent product *by O***J on October 6, 2024* I replaced the gear oil in my class 8 drive axles with this oil, I have noticed a significant reduction in temperature on highway during high outside temperatures. My axles run about 25* degrees cooler. I am impressed so far. We’ll see how the wear is after about a million miles. ### ⭐⭐⭐⭐⭐ Great line for heavy rear axle use *by T***M on September 4, 2024* Super slick and seems to hold up to abuse. I use this all the time in work truck rear axles. Shipping can be an issue just fyi. Bucket in a box. Never a perfect way to ship. 🤷‍♂️ ## Frequently Bought Together - StarFire Full Synthetic 75W140 Gear Lubricant 5 Gallon Pail - StarFire Full Synthetic 75W90 Gear Lubricant GL-5, 5-Gallon Pail - Performance Tool W54232 Lever-Action Bucket Pump for 5 Gallon Pails, Black --- ## 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/63094688-full-synthetic-sae-75w140-gl-5-gear-differential-oil-5](https://www.desertcart.jp/products/63094688-full-synthetic-sae-75w140-gl-5-gear-differential-oil-5) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-22*