Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Advertising Disclosure
10 Best gear oils of 2025
Explore up to 13% off
- Best Choice
1
Clicked 3 times in the last monthSpeedway MotorsMobil1 1043611 Full Synthetic Gear Lubricant, 75W-90 Quart 6 PK
- Curious about how we select the top products for you? Explore How It Works
- Value for Money
2
Lucas OilLucas Oil 10122 Synthetic SAE 75W-140 Gear Oil - 1 Gallon
10% Off 3
QuicksilverQuicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz
4
ValvolineValvoline FlexFill Full Synthetic SAE 75W-140 Gear Oil 1 QT Pouch
13% Off5
ValvolineValvoline High Performance SAE 80W-90 Gear Oil 1 QT
-
See Today’s Deals & Prices
6
MobilMobil 1 104361-UNIT 75W-90 Synthetic Gear Lube - 1 Quart
7
LUCASLucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon
8
Lucas OilLucas Oil 10045 Heavy Duty SAE 85W-140 Gear Oil - 1 Gallon
9
Lucas OilLucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart
10
Lucas OilLucas Oil 10047 SAE 75W-90 Synthetic Gear Oil/Transmission and Differential Lube - 1 Quart