--- product_id: 215600857 title: "ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4" brand: "ultra 1plus" price: "€ 31.22" currency: EUR in_stock: false reviews_count: 13 url: https://www.desertcart.hr/products/215600857-ultra-1plus-sae-75w-90-synthetic-gear-oil-api-gl store_origin: HR region: Croatia --- # Superior thermal stability under extreme pressure 75W-90 viscosity for all-weather reliability API GL-4 certified advanced gear protection ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4 **Brand:** ultra 1plus **Price:** € 31.22 **Availability:** ❌ Out of Stock ## Summary > ⚙️ Drive smarter, last longer — gear oil that works as hard as you do! ## Quick Answers - **What is this?** ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4 by ultra 1plus - **How much does it cost?** € 31.22 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/215600857-ultra-1plus-sae-75w-90-synthetic-gear-oil-api-gl) ## Best For - ultra 1plus enthusiasts ## Why This Product - Trusted ultra 1plus brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Season Gear Mastery:** Engineered to deliver flawless lubrication from freezing winters to scorching summers, ensuring your gears never skip a beat. - • **Extreme Pressure Shield:** Special anti-scuffing and friction modifiers create an invisible armor, protecting your drivetrain even under the harshest loads. - • **Extended Gear & Bearing Life:** Robust lubrication film minimizes wear and deposits, slashing maintenance costs and maximizing component longevity. - • **Limited Slip Differential Ready:** Enhanced with a dedicated additive package to optimize performance in limited slip differentials, for that extra edge on the road. - • **Leakage-Resistant Clean Performance:** Formulated to reduce leaks and contamination, keeping your engine bay pristine and your ride smooth. ## Overview ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil is a premium API GL-4 certified lubricant designed for universal automotive use. It offers superior thermal stability, year-round viscosity performance, and advanced anti-wear protection to extend gear and bearing life. Enhanced with limited slip differential additives and leakage prevention technology, it ensures cleaner, more efficient drivetrain operation across diverse driving conditions. ## Description Buy ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4: Gear Oils - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Works pretty well so far in a 2004 Tacoma w/ a manual, although the bottle is 38mm - Replaced and filled the manual transmission fluid on a 2004 Toyota Tacoma w/ the 2.4L RWD with this, and everything seems to work well. The only downside is these bottles use the wider 38mm cap (that you see from transmission fluid/larger motor oil bottles) instead of the 28mm cap (usually used for GL5 gear oil or soft packs), so I couldn't twist on the cap on my gear oil pump (pump worked still okay though, it's just not screwed on to the bottle and just kind of sits there). Overall though, price is good, fluid seems to be decent quality Review: Great price - Great price for a transmission fluid.I need for my smart car ## Features - ADVANCED 75W-90 GL-4 FORMULA: Premium synthetic base oils ensure superior thermal stability and cleanliness. Special anti-scuffing and friction modifiers ensure advanced protection under extreme pressure. - YEAR-ROUND PERFORMANCE AND VISCOSITY: Meets SAE J306 viscosity requirements for year-round, all-weather performance. Exceeds API GL-4 standards for automotive axle gears, maintaining stability in diverse conditions. - ENHANCED GEAR & BEARING LONGEVITY: Forms a robust, stable lubrication film, reducing wear for prolonged gear and bearing life. Minimizes deposits, extending the life of critical components and reducing maintenance costs. - OPTIMAL TEMPERATURE RESILIENCE: Maintains adequate lubrication in low and high temperatures. - LEAKAGE PREVENTION & EXTENDED PERFORMANCE: Minimizes leakage, ensuring cleaner operations and reduced contamination risks. Formulated with a Limited Slip Differential additive package for enhanced performance. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B088ZYPJQX | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | #17,309 in Automotive ( See Top 100 in Automotive ) #33 in Gear Oils | | Brand | ULTRA 1PLUS | | Customer Reviews | 4.7 4.7 out of 5 stars (539) | | Date First Available | February 11, 2020 | | Flash Point | 205 Degrees Celsius | | Item Weight | 1.92 pounds | | Item model number | UFS7590GL4L | | Manufacturer | Ultrachem LLC | | Manufacturer Part Number | UFS7590GL4L | | Model | UFS7590GL4L | | Product Dimensions | 4.25 x 2.5 x 9 inches | | SAE J300 Viscosity Grade | 75W-90 | | Size | 1 Quart | | UPC | 810050654326 | | Vehicle Service Type | Motorcyle | | Viscosity | 75W 90 | ## Product Details - **Brand:** ULTRA 1PLUS - **Liquid Volume:** 1 - **Package Information:** Bottle - **Vehicle Service Type:** Motorcyle - **Viscosity:** 75W 90 ## Images ![ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4 - Image 1](https://m.media-amazon.com/images/I/81+mMRBYu-L.jpg) ![ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4 - Image 2](https://m.media-amazon.com/images/I/81-KeiQYUIL.jpg) ![ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4 - Image 3](https://m.media-amazon.com/images/I/813HnVd9q4L.jpg) ![ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4 - Image 4](https://m.media-amazon.com/images/I/8158J6z2WwL.jpg) ![ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4 - Image 5](https://m.media-amazon.com/images/I/81h4-EYs8nL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works pretty well so far in a 2004 Tacoma w/ a manual, although the bottle is 38mm *by O***S on November 10, 2024* Replaced and filled the manual transmission fluid on a 2004 Toyota Tacoma w/ the 2.4L RWD with this, and everything seems to work well. The only downside is these bottles use the wider 38mm cap (that you see from transmission fluid/larger motor oil bottles) instead of the 28mm cap (usually used for GL5 gear oil or soft packs), so I couldn't twist on the cap on my gear oil pump (pump worked still okay though, it's just not screwed on to the bottle and just kind of sits there). Overall though, price is good, fluid seems to be decent quality ### ⭐⭐⭐⭐⭐ Great price *by M***. on January 15, 2026* Great price for a transmission fluid.I need for my smart car ### ⭐⭐⭐⭐⭐ Quality GL4. Still working well 20K miles later. *by C***. on March 31, 2022* 20K mile and over a year later Update below after original review: I'm using this in a 2007 Mazdaspeed 6 transmission (manual AWD 2.3L turbo). It seems GL4 is getting harder to come by, my local auto parts store didn't have any in stock, only GL5. I ordered this to try it out. My transmission has brass synchros, and I've heard not to use GL5 in it since most cause accelerated wear to soft metals. Shifts are smooth even before the transmission is up to operating temp, But a little more notchy than before, but no grinding experienced yet and notchiness may just be because it's a High milage transmission @155K miles. The mazdaspeed 3&6 transmissions are a little picky with oils as far as feel goes, I don't know what fluid was in it before as I bought it with 150K miles on the odometer and wanted to make sure the fluids were changed out since unknown service history. But when I swapped the transmission fluid it looked pretty clean and new. But at least this way I know it's got the proper fluid in it. I'm happy with it, and will try their GL5 synthetic for my transfer case and rear differential next, as I just bought conventional Lucas to swap for now from the auto parts store. Will update review if the fluid starts to break down quickly or causes issues. 20K mile update as of 8-23-23: transmission still feels just as good as when I changed to this fluid, no breakdown of the GL4 has occured that I can fell. I will be changing it out again at 30K miles, or when I swap in my built motor, whichever is first. Will definitely purchase this again. The notchiness I spoke about seemes to have lessened some as well, or I don't notice it anymore. Transmission still shifts well and goes into gears with no hassle. It's a safe buy for mazdaspeed 3's and 6's for sure. And I'm sure it will work great in any other transmissions that require GL4 of this weight. ## Frequently Bought Together - ULTRA 1PLUS SAE 75W-90 Synthetic Gear Oil, API GL-4 - Ultra 1PLUS SAE 50 Full Synthetic Manual Transmission Fluids (CD-50) (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.hr/products/215600857-ultra-1plus-sae-75w-90-synthetic-gear-oil-api-gl](https://www.desertcart.hr/products/215600857-ultra-1plus-sae-75w-90-synthetic-gear-oil-api-gl) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*