June 30, 2025

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Gear Oils of 2025

Save up to 33% off

Best Choice

1

Maxima

V-Twin Oil Change Kit Synthetic w/Chrome Filter, Sportster

33% Off
9.7

Exceptional

Our Rating
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Based on millions of stores and reviews

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Value for Money

2

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.
9.6

Exceptional

Our Rating

9.9
materials Quality

9.7
Simple to use

9.5
worth the money
3

Quicksilver
Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz
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.
Key specs
- form:Oil
- package information:Bottle
- recommended uses:Lube
- liquid volume:32 Fluid Ounces
- Brand:N/A
9.4

Excellent

Our Rating

9.9
Simple to use

9.7
materials Quality

9.3
worth the money
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.
9.1

Excellent

Our Rating
5

Lucas Oil

Lucas Oil 10045 Heavy Duty SAE 85W-140 Gear Oil - 1 Gallon
8.9

Very Good

Our Rating
See Today’s Deals & Prices
6

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.
8.8

Very Good

Our Rating
7

Triax

TRIAX Synergy Gear Max 75W-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)
8.7

Very Good

Our Rating
8

Lucas Oil
Lucas Oil 10122 Synthetic SAE 75W-140 Gear Oil - 1 Gallon

10% Off
Main highlights

Superior Gear Protection and Longevity
Lucas 10122 75/140 Synthetic Gear Oil provides exceptional protection against wear, friction, and thermal breakdown, ensuring optimal gearbox performance and extended service intervals.

Ideal for Extreme Conditions and Limited-Slip Differentials
Perfect for automotive and industrial applications, this gear oil is suitable for vehicles with limited-slip differentials and performs well in extreme temperatures.

Enhanced Gear Shifting Smoothness and Reduced Noise
Customers appreciate the noticeable reduction in gear noise and vibration, improving overall driving comfort and gear shifting reliability.
Key specs
- form:Oil
- package information:Bottle
- recommended uses:Vehicle
- liquid volume:1 Gallons
- Brand:N/A
8.4

Good

Our Rating

9.9
lasts a long time

9.7
worth the money

9.3
Noise level
9

ABRO

ABRO Gear Lube GL-1 SAE 140, 1 Gallon, Mineral-Based Lube, Free of Corrosive Compounds, Safe for Yellow Metals, Ideal for Manual Transmissions, Differentials, Rear Axles, Steering Gear Boxes
8.3

Good

Our Rating
10

Motul

Motul Gear 300 75w90 100 Percent Synthetic Gear Oil 1 Liter (105777)
8.1

Good

Our Rating

Gear Oils of 2025

1

V-Twin Oil Change Kit Synthetic w/Chrome Filter, Sportster

How do we rank?

How do we rank?

Analyzing top stores

2

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

9.9

9.7

9.5

3

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

9.9

9.7

9.3

4

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

5

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

6

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

7

TRIAX Synergy Gear Max 75W-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

8

Lucas Oil 10122 Synthetic SAE 75W-140 Gear Oil - 1 Gallon

9.9

9.7

9.3

9

ABRO Gear Lube GL-1 SAE 140, 1 Gallon, Mineral-Based Lube, Free of Corrosive Compounds, Safe for Yellow Metals, Ideal for Manual Transmissions, Differentials, Rear Axles, Steering Gear Boxes

10

Motul Gear 300 75w90 100 Percent Synthetic Gear Oil 1 Liter (105777)

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