10 Best gear oils of 2026

Explore top picks

Best Choice

1

Speedway Motors
Mobil1 1043611 Full Synthetic Gear Lubricant, 75W-90 Quart 6 PK
Main highlights

Supreme Performance Synthetic Lubricant
Mobil 1 Synthetic Gear Lube LS is a supreme performance, synthetic, multipurpose, automotive gear lubricant that meets or exceeds the highest level of performance requirements.

Ideal for Modern Passenger Vehicles
Best used in modern passenger vehicles including limited slip applications, providing outstanding power transfer performance even in severe driving conditions.

Praised for Quality and Performance
Customers frequently praise its quality, performance, and value, noting smoother engine operation and cost savings when bought in bulk.
9.8

Exceptional

Our Rating

9.9
materials Quality

9.7
Simple to use

9.5
worth the money
How do we rank?

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Careful review Our team ensures quality, value, and fit based on real user feedback

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Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

Valvoline

Valvoline Flexfill SAE 75W-90 Full Synthetic Gear Oil 1 QT, Case of 4
9.7

Exceptional

Our Rating
3

Valvoline

Valvoline FlexFill Advanced Full Synthetic 75W-90 Gear Oil 1 Quart Pouch
9.6

Exceptional

Our Rating
4

LUCAS
Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon
Main highlights

Exceptional Protection and Performance
Contains anti-wear and lubricity agents for wear protection and drag reduction.

Ideal for Heavy-Duty Use
Incorporates Lucas technology from top-rated Heavy Duty Oil Stabilizer, perfect for heavy-duty industry applications.

Praised Heat Control
Helps to control heat, a commonly praised feature in customer reviews.
Key specs
- Brand:LUCAS
- Viscosity:SAE 80W-90
- Unit Count:128.0 Fluid Ounces
- Model:Lucas Oil 10046
- UPC:633632417696
9.3

Excellent

Our Rating
5

Quicksilver
Mercury Marine Quicksilver High Performance Gear Lube
Main highlights

Direct Replacement for Mercury Marine
This lower unit gear oil is specifically formulated to meet Mercury Marine OEM specifications, ensuring optimal protection against corrosion and wear for engines above 75hp.

Ideal for Outboard Motors and Sterndrives
Designed for outboard motor lower units and sterndrive applications above 75hp, this gear oil is perfect for maintaining and protecting high-performance marine engines.

Highly Praised for Quality and Performance
Customers consistently praise this product for its effectiveness in protecting gears, ease of use, and its reliability in maintaining the performance of their boats.
9.2

Excellent

Our Rating

9.9
Simple to use

9.7
materials Quality

9.3
worth the money
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6

Valvoline
Valvoline Daily Protection 80W-90 Gear Oil 1 Quart
Main highlights

Outstanding High Pressure Performance
Extreme pressure additives deliver excellent load carrying capacity and durability for towing and hauling.

Ideal for Towing and Hauling
Perfect for vehicles requiring dependable gear protection under heavy loads and varying temperatures.

Praised for Rust and Corrosion Protection
Effectively fights rust and corrosion, ensuring long-lasting gear performance.
9.0

Excellent

Our Rating
7

Lucas Oil
Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart
Main highlights

Exceptional Protection and Performance
Contains anti-wear agents and Lucas additive technology for superior gear protection and performance.

Ideal for Heavy-Duty Applications
Best suited for vehicles demanding high-performance gear oil, reducing wear and heat.

Customer-Praised Lubricity
Highly praised for its ability to reduce friction and drag, enhancing vehicle efficiency.
8.9

Very Good

Our Rating
8

LUCAS
Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil - 1 Gallon
Main highlights

High Performance Durability
Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil offers high performance and durability, making it ideal for heavy-duty applications and high-temperature conditions.

Ideal for Extreme Conditions
Perfect for vehicles operating in extreme temperatures, ensuring smooth gear transitions and enhancing overall vehicle performance.

Heat Resistance Praised
Customers consistently praise the product's ability to withstand high temperatures without compromising performance or stability.
Key specs
- Brand:LUCAS
- Viscosity:75W90
- Unit Count:128.0 Fluid Ounces
- Model:Lucas Oil 10048
- UPC:049807100483
8.8

Very Good

Our Rating
9

Valvoline

Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch
8.7

Very Good

Our Rating
10

Lucas Oil

Lucas Oil 10045 Heavy Duty SAE 85W-140 Gear Oil - 1 Gallon
8.5

Good

Our Rating

10 Best gear oils of 2026

1

Mobil1 1043611 Full Synthetic Gear Lubricant, 75W-90 Quart 6 PK

9.9

9.7

9.5

How do we rank?

How do we rank?

Analyzing top stores

2

Valvoline Flexfill SAE 75W-90 Full Synthetic Gear Oil 1 QT, Case of 4

3

Valvoline FlexFill Advanced Full Synthetic 75W-90 Gear Oil 1 Quart Pouch

4

Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon

5

Mercury Marine Quicksilver High Performance Gear Lube

9.9

9.7

9.3

6

Valvoline Daily Protection 80W-90 Gear Oil 1 Quart

7

Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart

8

Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil - 1 Gallon

9

Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch

10

Lucas Oil 10045 Heavy Duty SAE 85W-140 Gear Oil - 1 Gallon

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