Top 9 75W-90 Synthetic Gear Oil GL-5 – Gear Oils

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1. Valvoline


Valvoline SynPower SAE 75W-90 Full Synthetic Gear Oil 1 QT

Valvoline #ad - Contains special additives to assist in protecting gear teeth from rust and corrosion and reduce chattering in limited-slip differentials. Formulated to maintain excellent low temperature fluid protection. Recommended for conventional and limited slip differentials and non-synchronized manual transmissions where API GL-5 or API GL-4 fluid is specificed. Helps provide outstanding thermal stability for cleanliness and longer service life.
BrandValvoline #ad
ManufacturerValvoline #ad
Height11.6 Inches
Length3.38 Inches
Weight0.01 Pounds
Width3.38 Inches
Part NumberVV975

2. Star Fire Premium Lubricants


StarFire Full Synthetic 75W90 Gear Lubricant 5 Gallon Pail

Star Fire Premium Lubricants #ad - Provides excellent protection against wear under extreme pressure and high torque operation. Helps prevent foaming, rust, and corrosion. High resistance to thermal breakdown. Protects against oxidative degradation. Smooths and quiets operation.
BrandStar Fire Premium Lubricants #ad
ManufacturerStarFire Premium Lubricants #ad
Height9.5 Inches
Length15.2 Inches
Width10.6 Inches
Part NumberSF F/S 75W90 GL 5 Gallon
ModelSF F/S 75W90 GL 5 Gallon

3. ACDelco


ACDelco GM Original Equipment 10-4128 GL-5 75W-90 Synthetic Lubricant, 1 gal

ACDelco #ad - High-quality product is suitable for both car and truck axles. Meets american petroleum Institute API GL-5 specification for use in severe conditions. Formulated for improved fuel efficiency, lower axle temperature operation, and improved thermal stability.
BrandACDelco #ad
ManufacturerACDelco #ad
Height4.1 Inches
Length12.1 Inches
Width7.5 Inches
Part Number10-4099
WarrantyNo Warranty

4. Ultralub


Ultra1Plus SAE 75W-90 Synthetic Gear Oil, API GL-5 | 5 Gallon Pail

Ultralub #ad - Extended gear and bearing life due to minimal deposits. Helps to reduce operating costs. Maintains film strength for reliable lubrication. Contribution to reduced wear and ease of start up. Contribution to reduced maintenance cost and longer equipment life.
BrandUltralub #ad
ManufacturerUltrachem LLC #ad
Part NumberUFS7590GL5

5. Valvoline


Valvoline High Performance SAE 75W-90 Gear Oil 1 QT

Valvoline #ad - Helps protect against gear wear from scuffing, scouring, corrosion and pitting. Formulated with extreme-pressure additives to minimize gear wear from shock loads. Recommended for limited-slip hypoid differentials and non-synchronized manual transmissions in passenger cars, sport utility vehicles, light trucks, vans and heavy-duty trucks where an API-GL5 or GL-4 fluid is specified. Protects against severe temperatures to help extend service life.
BrandValvoline #ad
ManufacturerValvoline #ad
Height11.6 Inches
Length3.38 Inches
Weight1.55 Pounds
Width3.38 Inches
Part NumberVV820

6. Triax


Gear/Differential Lubricant 1 Gallon, Triax Synergy Gear MAX 75W90 GL-5 Limited Slip, Manual Transmission, Ultra Long Drain 500k Miles

Triax #ad - Excellent wear control - up to 62% less wear vs oem specifications across various standards. Exceptional load bearing capacity - Exceeds the highest load test rating, Stage 14. Wide range of applications - hypoid and ring gears, passenger cars, racing / drifting.

Meets and exceeds api gl-5 and Limited Slip requirements and a very wide range of specifications across multiple OEMs. Professional grade: unrivaled shear stability and longevity. Will not shear under extreme torque. True synthetic with pao - this is a true synthetic formulation with PAO base oil. Dont be fooled by cheap products which advertise themselves as Synthetics but have a VI Index below 160 and freeze at -30F and a very limited specification range. 750, 000 miles for Class 8 highway trucks.

Features exceptional power transfer under extreme conditions. Extreme drain intervals - 500, 000 miles for heavy duty trucks and passenger cars. Greatly exceeds ep and aw tests fzg and l-37 - proven protection far beyond spec requirements, delivers excellent EP extreme pressure and AW anti-wear performance in a wide range of LS and NON-LS gear systems, Limited Slip - Heavy Duty Highway, Heavy Duty Off-Road, Differentials, with hypoid and other gears.
BrandTriax #ad
Height11.75 Inches
Length7.4 Inches
Width4.1 Inches
Part NumberTRX5559

7. Royal Purple


1 Pack, 6 Quart, Royal Purple 06300 75w90 Max Gear Oil Case

Royal Purple #ad - Makes gears run smoother, quieter, cooler and longer without overhauls. Max gear outperforms ordinary gear oils by combining the highest quality synthetic oils with Royal Purple's proprietary Synerlec additive technology. Formulated with a friction modifier additive - no additional additives are necessary. Ultra-tough, high performance Automotive hypoid gear oil to provide maximum protection to heavily loaded gears while maximizing power throughout the drive train. A direct reduction of drag in the drive train has huge advantage for trucks and other 4-wheel drive vehicles.
BrandRoyal Purple #ad
ManufacturerRoyal Purple #ad
Height12.6 Inches
Length10.9 Inches
Weight12.65 Pounds
Width7.3 Inches
Part Number06300

8. Ultralub


Ultra1Plus SAE 75W-90 Synthetic Gear Oil GL-5 | Quart

Ultralub #ad - Fully synthetic - full synthetic motor oil means longer lasting high-performance vehicles with a cleaner filter and fewer oil impurities. Balanced solution - an ultra low pour point and low temperature fluidity help this oil retain its balance across temperature extremes.

Proprietary blend - we blend high-performance synthetic components to create a proprietary solution for guaranteed performance. Pressure ready - our 75w-90 oil was made to deal with extreme pressure and shock loading, providing load-carrying capability that won’t let you down. Supreme performance - with exceptional thermal and oxidation stability, as well as a high Viscosity Index VI rating, this oil has earned a reputation for performance.
BrandUltralub #ad
ManufacturerUltrachem LLC #ad
Height9 Inches
Length4.25 Inches
Weight1.92 Pounds
Width2.5 Inches
Part NumberUCFS7590GGL4QA

9. Red Line


Red Line 57904 75W90 Synthetic Gear Oil, 1 Quart

Red Line #ad - Makes the transmission synchronizers come to equal speeds more quickly. Can also be used in racing limited-slip differentials. Allows for faster shifting.
BrandRed Line #ad
ManufacturerRed Line #ad
Height8.7 Inches
Length4 Inches
Weight1.7 Pounds
Width3.9 Inches
Part Number57904