Product Description
Ultra1Plus™ SAE 75W-90 Synthetic Gear Oil, API GL-4
Engineered for high-performance manual transmissions, transaxles, and gear systems, Ultra1Plus™ SAE 75W-90 Synthetic Gear Oil, API GL-4 delivers advanced wear protection, superior thermal stability, and reliable all-season lubrication under demanding operating conditions.
Formulated with premium synthetic base oils and advanced performance additives, this high-performance gear lubricant provides exceptional oxidation resistance, shear stability, anti-scuff protection, and smooth gear operation across a wide range of temperatures and loads.
Its advanced friction modifier technology helps protect gears, synchronizers, bearings, and drivetrain components against wear, rust, foaming, oxidation, and varnish formation while maintaining strong lubricant film strength under extreme pressure conditions.
Designed for year-round operation in passenger vehicles, light trucks, manual transmissions, transaxles, and gear systems requiring API GL-4 performance.
Why choose Ultra1Plus™ SAE 75W-90 Synthetic Gear Oil, API GL-4
- Strong & Stable Lubrication Film: Provides durable protection against wear under high load and severe operating conditions.
- Outstanding Thermal & Oxidation Stability: Resists heat breakdown and oxidation for longer lubricant and component life.
- Extended Gear & Bearing Life: Helps reduce deposits and wear for long-lasting drivetrain protection.
- Superior Load-Carrying Capability: Maintains protection under high-speed and high-torque operating conditions.
- All-Season Temperature Performance: Provides excellent low-temperature flow and reliable high-temperature lubrication.
- Reduced Leakage & Contamination: Helps protect seals and maintain cleaner gear system operation.
- Enhanced Limited Slip Compatibility: Formulated with friction modifier technology for improved limited-slip differential performance.
Applications
Recommended for:
- Manual transmissions
- Transaxles
- Hypoid gear systems
- Passenger cars and light trucks
- Performance and heavy-duty gear applications
- Limited-slip compatible gear systems
Specifications & Compatibility
- Meets or exceeds: API GL-4, SAE J306
- Suitable for: SAE 75W-90 gear oil applications
- Compatible with: Manual transmissions and gear systems requiring API GL-4 performance
Manufacture ID: UL706
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55-gallon drums and 265-gallon totes: Dispatches in 5–10 business days. | ||||||
| All other items: Ships the next business day. | |||||||
Learn More -> Choosing the right type of Gear Oil
Ultra1Plus™ can export products worldwide. Products available for larger purchases, truckloads and pallets, please CONTACT US
WHAT DOES IT MEAN WHEN A PRODUCT IS "UNAVAILABLE"?
Safety Data Sheets & Product Information:
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Technical Data Sheet |
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U1P-Gear (Product Catalog) |
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Technical Data Sheet |
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WARNING: California Proposition 65 www.p65warnings.ca.gov |
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Aditional information
Reviews
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As good as the spendy stuff.
My transmission had 70K logged and I wanted to swap the fluid to keep it going. The warranty is that the fluid put in at the assembly plant will last its life. Well, duh! If a transmission dies because the old fluid is gunky and has lost its viscosity, then I guess that'd be the life of the transmission and they're covered. Synthetic transmission fluids that were up to spec for my car were all very expensive except for this, which didn't bust the bank. But, it's working beautifully despite the price. Shifts are as crisp as the day the car was new. We're in a Minnesota cold snap and the transmission isn't sluggish at all. It's good gunk.
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MT oil
92 miata 5 speed shifts better than before
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GL4 Nv4500
This is what you need for a dodge diesel nv4500 5 speed transmission.
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Good stuff!
Hard to find GL4 these days it seems... good price and high quality.
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Great value works well
We'll use it and all our cars have for a long time your price is very good better than Walmart
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Great in my 2014 Mazda Miata
This is my third swap of gear oil in my NC4 Miata since I bought it earlier this year. First was Redline MT90, then an 80W-90 viscosity that I should not have tried. This oil so far is much better - definitely worth a try in any Miata. If I still had my 90 NA, I definitely try it - I tried everything else in that one, including Motorcraft, and nothing worked well.
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Only affordable GL-4 synthetic transmission gear oil
I have a Mazda and a Toyota that use GL-4 gear oil in the gearbox. This used to be 5.99 a quart, but it has gone up quite a bit in price. It is still a bargain for synthetic GL-4 gear oil. GL-5 is not to be used in a gearbox with brass synchros, even if the GL-5 says it is compatible with GL-4.
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Good deal
Price best out there. So far seems to work well in transfer case and transmission.
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Just what a Toyota gearbox needs
I've worked in the automotive industry for nearly 20 years and I know the importance of using the specified fluids. For this application I couldn't find anything locally and most of the products I found online are for high performance use and are prohibitively expensive. This was just what was specified and the price is reasonable
