10 Best gear oils of 2025

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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

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
9.5

Excellent

Our Rating
3

Valvoline

Valvoline FlexFill Advanced Full Synthetic 75W-90 Gear Oil 1 QT Pouch
9.4

Excellent

Our Rating
4

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.
9.3

Excellent

Our Rating
5

Quicksilver
Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz

25% Off
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.
9.1

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 QT
9.0

Excellent

Our Rating
7

Lucas Oil

Lucas Oil 10047 SAE 75W-90 Synthetic Gear Oil/Transmission and Differential Lube - 1 Quart

32% Off
8.9

Very Good

Our Rating
8

Lucas Oil

Lucas Oil 10045 Heavy Duty SAE 85W-140 Gear Oil - 1 Gallon
8.7

Very Good

Our Rating
9

Royal Purple

Royal Purple 01300 Max Gear 75W-90 High Performance Synthetic Automotive Gear Oil , 1 Quart (32 Ounces)
8.6

Very Good

Our Rating
10

Mobil
Mobil 1 Gear Oil, 75W90, Limited Slip Additive, Synthetic, 1 qt Bottle, Each

25% Off
Main highlights

Supreme Performance and Versatility
Mobil 1 Synthetic Gear Lube LS 75W-90 offers supreme performance, multi-purpose use, and outstanding power transfer under various operating conditions, including limited slip applications.

Ideal for Modern Passenger Vehicles
Perfect for modern passenger vehicles, including BMW motorcycles and Subaru Outbacks, ensuring smooth and quiet differential performance.

Praised for Quality and Reliability
Customers consistently praise the product for its quality, reliability, and the smooth, quiet operation it provides to differentials.
8.3

Good

Our Rating

9.9
worth the money

9.7
materials Quality

9.3
Simple to use

10 Best gear oils of 2025

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

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

3

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

4

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

5

Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz

9.9

9.7

9.3

6

Valvoline Daily Protection 80W-90 Gear Oil 1 QT

7

Lucas Oil 10047 SAE 75W-90 Synthetic Gear Oil/Transmission and Differential Lube - 1 Quart

8

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

9

Royal Purple 01300 Max Gear 75W-90 High Performance Synthetic Automotive Gear Oil , 1 Quart (32 Ounces)

10

Mobil 1 Gear Oil, 75W90, Limited Slip Additive, Synthetic, 1 qt Bottle, Each

9.9

9.7

9.3

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