---
product_id: 215600857
title: "SAE 75W-90 Synthetic Gear Oil GL-4 | Manual Transmission, Transaxle & Limited Slip | 1 Quart"
brand: "ultra 1plus"
price: "VT11586"
currency: VUV
in_stock: true
reviews_count: 13
category: "Ultra 1 Plus"
url: https://www.desertcart.vu/products/215600857-sae-75w-90-synthetic-gear-oil-gl-4-manual-transmission
store_origin: VU
region: Vanuatu
---

# Superior thermal stability under extreme pressure 75W-90 viscosity for all-weather reliability API GL-4 certified advanced gear protection SAE 75W-90 Synthetic Gear Oil GL-4 | Manual Transmission, Transaxle & Limited Slip | 1 Quart

**Brand:** ultra 1plus
**Price:** VT11586
**Availability:** ✅ In Stock

## Summary

> ⚙️ Drive smarter, last longer — gear oil that works as hard as you do!

## Quick Answers

- **What is this?** SAE 75W-90 Synthetic Gear Oil GL-4 | Manual Transmission, Transaxle & Limited Slip | 1 Quart by ultra 1plus
- **How much does it cost?** VT11586 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/215600857-sae-75w-90-synthetic-gear-oil-gl-4-manual-transmission)

## 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

Product description

Review: Great Bulk Oil - Quality product at a fair price.
Review: Quality GL4. Still working well 20K miles later. - 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.

## Features

- API GL-4 CERTIFIED 75W-90 SYNTHETIC GEAR OIL: Exceeds API GL-4 and SAE J306 standards with premium synthetic base oils, advanced anti-scuff additives, and friction modifiers for extreme-pressure gear protection.
- ALL-SEASON VISCOSITY STABILITY: Meets SAE J306 year-round requirements with reliable low-temperature flow and high-temperature lubrication for manual transmissions, transaxles, and drivetrain gear systems.
- EXTENDED GEAR & BEARING LONGEVITY: Forms a strong, stable lubrication film under high-load and high-torque conditions—reducing wear on gears, synchronizers, and bearings while minimizing deposits and maintenance costs.
- SUPERIOR THERMAL & OXIDATION STABILITY: Resists heat breakdown, oxidation, rust, foaming, and varnish formation—maintaining full lubricant film strength and drivetrain cleanliness across extreme temperature ranges.
- LIMITED SLIP COMPATIBLE : 75w-90 gl-4 Friction modifier technology ensures limited-slip differential performance. Cost-effective gear protection for passenger cars and light trucks.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B088ZYPJQX |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #11,241 in Automotive ( See Top 100 in Automotive ) #25 in Gear Oils |
| Brand | ULTRA 1PLUS |
| Brand Name | ULTRA 1PLUS |
| Compatible with Vehicle Type | Motorcyle |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 587 Reviews |
| Flash Point | 205 Degrees Celsius |
| Item Weight | 1.9 Pounds |
| Liquid Volume | 1.0 |
| Manufacturer | Ultrachem LLC |
| Manufacturer Part Number | UFS7590GL4L |
| Model Number | UFS7590GL4L |
| Package Information | Bottle |
| SAE J300 Viscosity Grade | 75W-90 |
| Size | 1 Quart |
| UPC | 810050654326 |
| Unit Count | 32 Fluid Ounces |
| Vehicle Service Type | Motorcyle |
| Viscosity Level | High |

## Product Details

- **Brand:** ULTRA 1PLUS
- **Liquid Volume:** 1
- **Package Information:** Bottle
- **Vehicle Service Type:** Motorcyle
- **Viscosity:** 75W 90

## Images

![SAE 75W-90 Synthetic Gear Oil GL-4 | Manual Transmission, Transaxle & Limited Slip | 1 Quart - Image 1](https://m.media-amazon.com/images/I/81-KeiQYUIL.jpg)
![SAE 75W-90 Synthetic Gear Oil GL-4 | Manual Transmission, Transaxle & Limited Slip | 1 Quart - Image 2](https://m.media-amazon.com/images/I/81h4-EYs8nL.jpg)
![SAE 75W-90 Synthetic Gear Oil GL-4 | Manual Transmission, Transaxle & Limited Slip | 1 Quart - Image 3](https://m.media-amazon.com/images/I/81-I9kpFbVL.jpg)
![SAE 75W-90 Synthetic Gear Oil GL-4 | Manual Transmission, Transaxle & Limited Slip | 1 Quart - Image 4](https://m.media-amazon.com/images/I/813HnVd9q4L.jpg)
![SAE 75W-90 Synthetic Gear Oil GL-4 | Manual Transmission, Transaxle & Limited Slip | 1 Quart - Image 5](https://m.media-amazon.com/images/I/8158J6z2WwL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Bulk Oil
*by W***R on April 13, 2026*

Quality product at a fair price.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ worked well
*by R***H on April 16, 2026*

good stuff

## 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.vu/products/215600857-sae-75w-90-synthetic-gear-oil-gl-4-manual-transmission](https://www.desertcart.vu/products/215600857-sae-75w-90-synthetic-gear-oil-gl-4-manual-transmission)

---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-06-07*