ULTRA1PLUS UFS7590GL5-6L Synthetic Gear Oil Qts 75W-90 GL-5 MT-01
( Brand: Ultra1plus ), ( Manufacturer Part Number: UFS7590GL5-6L ), ( Part Type: Oil Gear ), ( Country Of Origin: United States ), ( Oil Viscosity: 75w 90 ), ( Volume: 6qt. ), ( Custom Bundle: No ), ( Package Quantity: Pack Of 6 ), ( Unit Quantity: 6 Qts ), ( Gl Rating: Gl-5 )
Review ULTRA1PLUS 75w-90 Synthetic Gear Oil Gl-5 Qts
The **Ultra1Plus UFS7590GL5-6L 75W-90 Synthetic Gear Oil** is a high-performance, full-synthetic transmission and final drive fluid engineered to deliver exceptional protection, longevity, and peak performance in demanding automotive applications. Formulated with advanced synthetic base stocks and a premium additive package, this GL-5/MIL-PRF-2105D compliant oil ensures superior wear resistance, thermal stability, and oxidation resistance, making it ideal for heavy-duty transmissions, differentials, and transfer cases in both on-road and off-road vehicles. Its 75W-90 viscosity rating provides balanced flow characteristics, ensuring smooth operation in extreme temperatures from freezing cold starts to scorching high-performance driving conditions while maintaining optimal lubrication under heavy loads. The oil s robust formulation resists foaming, sludge formation, and gear pitting, safeguarding critical components against premature wear and failure, even in the most aggressive driving scenarios. Whether used in performance trucks, SUVs, ATVs, or racing applications, this oil excels in maintaining gear integrity, reducing friction, and extending the lifespan of drivetrain systems. Its synthetic composition also enhances fuel efficiency by minimizing internal friction, making it a cost-effective choice for both performance enthusiasts and fleet operators seeking reliable, long-lasting protection. Ultra1Plus s commitment to quality ensures that this oil meets or exceeds industry standards, providing confidence in its ability to handle the toughest demands while delivering quiet, trouble-free operation. Perfect for those who demand nothing less than the best in lubrication technology, this gear oil is a standout choice for anyone prioritizing durability, performance, and peace of mind.
**Pros and Cons of buying a Ultra 1Plus UFS7590GL5-6L 75W-90 Synthetic Gear Oil (GL-5, MT-01, 1 Quart)**
### **Pros**
1. **High-Quality Synthetic Blend** This oil is formulated with synthetic base stocks, which offer superior protection, better thermal stability, and longer drain intervals compared to conventional mineral oils. This reduces wear on gears and transmission components over time.
2. **Meets Multiple Specifications** The oil is designed to meet **GL-5** (for heavy-duty applications like trucks, SUVs, and off-road vehicles) and **MT-01** (for modern manual transmissions, including those in Ford s MT-01 spec vehicles). This makes it versatile for a wide range of applications, including:
- Heavy-duty trucks (e.g., Ford F-Series, Chevy Silverado, Ram 1500)
- Manual transmissions in performance and muscle cars
- Off-road and towing applications
- Older vehicles requiring GL-5 protection
3. **Excellent Wear Protection** The synthetic blend provides enhanced lubrication, reducing friction and preventing premature wear on gears, synchronizers, and bearings. This is particularly beneficial in high-stress applications like towing, hauling, or aggressive driving.
4. **Thermal and Oxidation Stability** Synthetic oils resist breakdown better than conventional oils, maintaining viscosity and performance under extreme temperatures (both hot and cold). This helps prevent sludge formation and extends oil life.
5. **Compatibility with Modern and Older Vehicles** Since it meets both **GL-5** and **MT-01** specs, it can be used in vehicles that require either standard or extreme-pressure (EP) gear oils without risking compatibility issues.
6. **Good for Towing and Heavy Loads** If you frequently tow trailers, haul heavy loads, or drive in rough terrain, this oil s robust formulation helps protect your transmission from the additional stress.
7. **Brand Reputation** Ultra is a well-known brand in the automotive aftermarket, offering reliable products at a reasonable price. Their synthetic blends are often preferred over full synthetic oils for budget-conscious buyers who still want premium protection.
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### **Cons**
1. **Not a Full Synthetic** While this is a **synthetic blend**, it contains some mineral oil components. Full synthetic oils (e.g., Mobil 1, Pennzoil Platinum) may offer even better performance in extreme conditions, though the difference may not be significant for most drivers.
2. **Price Compared to Conventional Oil** Synthetic blends are more expensive than conventional gear oils. If you re on a tight budget and don t need the extra protection, a conventional GL-5 oil might suffice for lighter applications.
3. **Potential Overkill for Light-Duty Use** If you only drive a light-duty vehicle (e.g., a small sedan or hybrid) under normal conditions, a **GL-4** or **MT-1** oil might be sufficient. Using GL-5 in a vehicle that doesn t require it could be unnecessary and slightly more expensive.
4. **Limited Availability in Some Regions** Depending on where you purchase it, this specific product may not be as widely stocked as more common oils (e.g., Mobil 1, Valvoline). You may need to order online or check specialty auto parts stores.
5. **No Additive Boosts for Extreme Conditions** While it s a good all-around oil, it may not include specialized additives (e.g., friction modifiers or extreme-pressure agents) found in high-performance or racing-specific gear oils.
6. **Drain Intervals Still Apply** Like all oils, this should be changed according to the manufacturer s recommendations or under severe conditions (e.g., towing, off-roading). Relying on it indefinitely without changes will lead to degraded performance.
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### **Conclusion**
The **Ultra 1Plus UFS7590GL5-6L 75W-90 Synthetic Gear Oil (GL-5/MT-01)** is a **strong, versatile choice** for drivers who need a reliable, high-performance gear oil for heavy-duty, manual transmissions, or vehicles requiring GL-5 or MT-01 specifications. Its synthetic blend provides better protection than conventional oil without the premium price of full synthetics. It s particularly well-suited for:
- **Trucks, SUVs, and performance cars** with manual transmissions.
- **Vehicles that see heavy use** (towing, hauling, off-roading).
- **Owners who want a balance of cost and performance**.
However, if you re driving a **light-duty vehicle under normal conditions**, a **GL-4 or MT-1 oil** might be overkill. Additionally, if you re looking for **maximum protection in extreme conditions** (e.g., racing, high-performance driving), a **full synthetic or a specialized high-performance gear oil** could be a better fit.
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### **Recommendation**
**Buy this oil if:**- You have a **heavy-duty truck, SUV, or manual transmission vehicle** that requires **GL-5 or MT-01** protection.
- You frequently **tow, haul, or drive in rough conditions**.
- You want **better wear protection and longer oil life** than conventional oil without paying for a full synthetic.
- You prefer a **reliable, mid-range synthetic blend** from a trusted brand.
**Consider alternatives if:**- You drive a **light-duty vehicle** and don t need GL-5 protection (a **GL-4 or MT-1 oil** may suffice).
- You want **maximum performance in extreme conditions** (e.g., racing, high-RPM driving) and are willing to pay for a **full synthetic or high-performance gear oil**.
- You re on a **very tight budget** and can use a **conventional GL-5 oil** for basic protection.
**Final Verdict:** This is a **solid, cost-effective choice** for most drivers needing a **synthetic gear oil for heavy-duty or manual transmission applications**. It strikes a good balance between performance and affordability.
Details:
Ultra1Plus SAE 75W-90 Synthetic Gear Oil, API GL-5 is designed for use in all seasons and exceed the year-around, all-weather performance viscosity requirements of J306 as well rigorous. Contribution to reduced maintenance cost and longer equipment life. Contribution to reduced wear and ease of start up. Longer seal Life.
Ultra1Plus 75W-90 API GL-5 Gear Plus Synthetic Oil highlights Extended gear and bearing life due to minimal deposits. Maintains film strength for reliable lubrication. Helps to reduce operating costs. Increased load-carrying capability.
Specialty anti-scuffing additives and fraction modifiers provide advanced protection lubricity in extreme pressure conditions.
part #: ufs7590gl56l prices
- $56.99-$109.99
specifications automobilefluids:
- brand: Ultra1plus
- mpn: Ufs7590gl5-6l
- part type: Oil Gear
- country of origin: United States
- oil viscosity: 75w 90
- volume: 6qt.
- custom bundle: No
- package quantity: Pack Of 6
- unit quantity: 6 Qts
- gl rating: Gl-5
payments automobilefluids:
- wallet: Apple-pay
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seller automobilefluids:
- # reviews: 2624
- rating: 100.0%
- city: Leominster, Massachusetts
returns automobilefluids:
- policy: No Returns
shipping automobilefluids:
- type: Calculated
- class: Standard
- carrier: USPS
- service: USPS Ground Advantage
- transit: 6-12 Days
- cost: $0.00
offer automobilefluids:
- best offers: True
- options: Ship-to-home
- availability: In Stock
- sold: 0
- started: February 13, 2026
- quantity: 1
general automobilefluids:
- condition: New
- Automotive Tools Supplies > Fluids Chemicals > Gear/Differential Oil
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