Best Outboard Gear Oils (Sep. 2026) - Rated by CherryPicks' Experts

At a Glance: Our Top Picks

Top 1

Genuine Honda 08200-9014 Hypoid Gear Oil Hgo-1 Gl-5 75W-85

9.8
CPR Score
Top 2

Mazda Gear Oil - 0000-77-SG1-QT

9.8
CPR Score
Top 3

Suzuki Marine 990A0-01E81-01Q ECSTAR Hypoid Gear Oil SAE 90

9.6
CPR Score
Tips

We researched and analyzed dozens of Outboard Gear Oils reviews from different Oils & Fluids brands, including Lucas Oil, Valvoline, Liqui Moly, Honda, Mobil, Quicksilver, Royal Purple, MERCURY, Mazda And Sierra. We've selected 30 best Outboard Gear Oils in the following ranking by considering price, product features, easy to use and so on.

* CherryPicks.Reviews is reader-supported, Our editor review, and recommend the best products based on extensive data analysis, if you click on the product links, we may earn a commission through qualifying products purchased.

The Best Outboard Gear Oils Rated by CherryPicks

Market Overview
Outboard Gear Oils Reviewed
  • Reviews Analyzed: 36,409 Items
  • CPR Avg. Rating: 8.5 / 10
30 Products Evaluated
  • Highest Price: $163.99
  • Lowest Price: $8.70
  • Avg. Price: $28.36
Price Disclaimer

Top 30 Outboard Gear Oils on Amazon (Verified You can Buy)

Genuine Honda 08200-9014 Hypoid Gear Oil Hgo-1 Gl-5 75W-85

Honda
08200-9014
0.0 x 0.0 x 0.0 inches

Ratings for Honda (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
OEM Goods Direct -
G.P.S. 1,215
Apple Honda York -
Metro 24 Wholesale, Inc. -
Crown Auto Group -

Features

genuine oem factory part
exact fit
Show More
Top 2

Mazda Gear Oil - 0000-77-SG1-QT

Mazda
0000-77-SG1-QT

Ratings for Mazda (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
The Parts Department 4,385
OEM Parts Surplus -

Features

Gear Oil

Suzuki Marine 990A0-01E81-01Q ECSTAR Hypoid Gear Oil SAE 90

SUZUKI
1.9798 Pounds

Ratings for SUZUKI (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Lancet Marine LLC -
Three Belles Marina Service -
Jorgensen Powersports -
Direct Sales Inc -

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

Valvoline
889785-EA
4.25 x 3.38 x 12.0 inches
1.81 pounds

Ratings for Valvoline (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon Resale -
Amazon.com -

Features

FlexFill squeezable pouch releases 2X more fluid with less effort for 3X faster filling vs. traditional bottle packaging
Contains limited slip for optimal performance of the clutch pack, while also delivering 30% better protection against towing and heavy loads and 1.5X better gear wear protection
Show More

Valvoline High Performance SAE 80W-90 Gear Oil 1 QT

Valvoline
VV831
3.38 x 3.38 x 11.6 inches
1.98 pounds

Ratings for Valvoline (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Protects Against Severe Temperatures To Help Extend Service Life
Formulated With Extreme-Pressure Additives To Minimize Gear Wear From Shock Loads
Show More

Stens Lucas Oil LUC10043 Oil SAE 80W-90 Heavy Duty Gear Oil - 1 Quart

Lucas Oil
LUC10043
11.6 x 3.3 x 3.25 inches
2.0 Pounds

Ratings for Lucas Oil (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
SpraySmarter -

Features

Contains special anti-wear and lubricity agents
Helps to control heat
Show More

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

Lucas Oil
LUC10046
4.0 x 6.0 x 6.0 inches
0.0006 Pounds

Ratings for Lucas Oil (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Affordable Solutions
Provides rust protection
Show More

Valvoline High Performance SAE 80W-90 Gear Oil 1 GA

Valvoline
773732-EA
8.2 x 4.475 x 10.903 Inches
7.0 pounds

Ratings for Valvoline (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Amazon Resale -

Features

Protects against severe temperatures to help extend service life
Formulated with extreme-pressure additives to minimize gear wear from shock loads
Show More

Tohatsu Outboards Premium 80W-90 Lower Unit Gear Lube One Quart

Tohatsu
3.0 pounds

Ratings for Tohatsu (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Lancet Marine LLC -

Honda Marine Outboard Motor Lower Unit 80W-90 Gear Case Oil, Quart

Honda
9.0 x 4.0 x 2.5 inches
0.0006 pounds
  • Designer: Honda Marine

Ratings for Honda (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
DataAlchemy 4,085
A-Ok Power 8,097
Acme Tools 2,715

Quicksilver 858064Q01 SAE 90 High Performance Gear Lube , 32 oz

Quicksilver
92-858064Q01
7.62 x 8.75 x 9.87 inches
0.022 pounds

Ratings for Quicksilver (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Amazon Resale -

Features

Lower unit gear oil formulated to protect against corrosion and excessive wear
Designed for outboard motor lower unit and sterndrive applications above 75 HP
Show More

Mercury SAE 90 High Performance Gear Lube

MERCURY
8M0222063
4.25 x 2.25 x 9.5 inches
2.25 pounds

Ratings for MERCURY (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
TX Parts LLC -
Boating Accessories 6,216
AB MARINE PARTS -
LEADERS RPM 1,920
TWL POWERSPORTS -

Features

Genuine OEM Factory Original Equipment Mercruiser Sterndrive & Outdrive Oil
Exclusive formula is engineered to provide extended gear life in extreme conditions including high-speed and high-horsepower applications
Show More

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

Valvoline
902146-EA
4.25 x 3.38 x 12.0 inches
0.9 pounds

Ratings for Valvoline (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Next-level performance with 4X better gear wear protection, 4X better extreme pressure protection and 60% better protection against towing and heavy loads
Premium passenger car gear oil contains a limited slip friction modifier for optimal clutch pack performance and an extreme pressure additive for our best shock loading and high torque protection
Show More

Sierra 18-9650-2 Hi Performance Synthetic Blend Lower Unit Gear Lube Oil, 1 quart

Sierra
SR18.9650.2
0.0 x 0.0 x 0.0 inches
1.69 pounds

Ratings for Sierra (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
NOVA Distribution -
McCarty Motors -

Features

Synthetic blended marine formulation reduces operating friction for increased performance
Protects gears, bearings and other gear case components
Show More

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

Valvoline
889785-CS
13.095 x 9.365 x 4.115 inches
7.6302 Pounds

Ratings for Valvoline (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
DSR Auto Supply -
Amazon.com -
VerSure 157
Amazon Resale -

Features

Works in tight spaces and makes gear oil easier to use
Full Synthetic formula for exceptional high and low temperature protection
Show More
Top 16

Quicksilver High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 2.5 Gallon

Quicksilver
858065Q01
13.75 x 9.75 x 15.5 inches
10.0 pounds

Ratings for Quicksilver (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Direct replacement for Mercury Marine 858065K01
Lower unit gear oil formulated to protect against corrosion and excessive wear
Show More

Valvoline FlexFill Full Synthetic SAE 75W-140 Gear Oil 1 QT Pouch

Valvoline
889787-EA
4.25 x 3.38 x 12.0 inches
1.8409 pounds

Ratings for Valvoline (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Amazon Resale -

Features

Works in tight spaces and makes gear oil easier to use
Full Synthetic formula for exceptional high and low temperature protection
Show More

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

Royal Purple
ROY01300
3.25 x 3.25 x 11.0 Inches
1.0 Pounds

Ratings for Royal Purple (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
166 Auto Inc 7,812
Titan Motorsports -
Amazon.com -
VerSure 157
Amazon Resale -

Features

For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

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

Valvoline
VV975
3.38 x 3.38 x 11.6 inches
0.01 Pounds

Ratings for Valvoline (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
B and S Supply 5,895
Amazon Resale -

Features

Formulated to maintain excellent low temperature fluid protection
Helps provide outstanding thermal stability for cleanliness and longer service life
Show More

Mobil 1 104361-UNIT 75W-90 Synthetic Gear Lube - 1 Quart

Mobil
104361-UNIT
3.4 x 3.3 x 9.8 inches
1.85 pounds

Ratings for Mobil (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
R/A Hoerr Incorporated 1,442
ZIC Sales -
Amazon.com -
Kar Kare Distributors -
Speedway Motors 6,486
Amazon Resale -

Features

Mobil 1 Synthetic Gear Lube Ls 75W-90 Mobil 1 Synthetic Gear Lube Ls 75W-90 Is A Supreme Performance, Synthetic, Multi-Purpose, Sae 75W-90 Automotive Gear Lubricant Designed To Meet The Highest Level Of Performance Requirements Of Modern Passenger Vehicles In All Types Of Operating Conditions, Including Limited Slip Applications, As Well As Delivering Outstanding Power Transfer Performance
Compared To Conventional Hypoid Gear Lubricants, Mobil 1 Synthetic Gear Lube Ls 75W-90 Performs Exceptionally Well Over A Wide Range Of Temperatures
Show More

Lucas Oil 10048 SAE 75W-90 Synthetic Transmission and Differential Lubricant - 1 Gallon

Lucas Oil
LUC10048
4.0 x 6.0 x 6.0 inches
7.61 Pounds

Ratings for Lucas Oil (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
VerSure 157
US Home Accessories -
G.P.S. 1,215
Vera Tools 5,292

Features

Fit Type: Vehicle Specific
Package Dimensions: 31.75 H x 15.24 L x 15.24 W (centimeters)
Show More

Liqui Moly (20016) 85W-90 GL-4 Mineral Gear Oil - 1 Liter

Liqui Moly
20016
3.3858 x 3.3858 x 10.3149 inches
1.9511 pounds

Ratings for Liqui Moly (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Edo Performance -
Shop Eddies 🏁✳️🚚 5,418
World Brands 305 -
Amazon.com -

Lucas Oil 10652 Synthetic SAE 75W-90 M8 Marine Gear Oil - 1 Quart

Lucas Oil
10652
4.35 x 2.42 x 9.0 inches
0.0001 pounds

Ratings for Lucas Oil (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
166 Auto Inc 7,812
G.P.S. 1,215
Amazon Resale -

Features

For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

MERCURY Genuine Premium Gear Lube Qt. - 858058K01

MERCURY
858058K01
12.0 x 7.0 x 8.0 inches

Ratings for MERCURY (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
LEADERS RPM 1,920
AB MARINE PARTS -
TWL POWERSPORTS -
Top 25

Evinrude ETEC Johnson OMC HPF Pro 3 Qt Gearcase Lube and Pump Kit Outboard Sterndrive

Evinrude
Does Not Apply
8.0 x 6.0 x 8.0 inches

Ratings for Evinrude (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Doug Russell Marine -

Features

Genuine factory original Evinrude HPF Gear Lube
Kit includes 3 Quarts lower unit fluid and gear lube pump
Show More
Top 26

Evinrude ETEC Johnson OMC HPF Pro 2 Qt Gearcase Lube and Pump Kit Outboard Sterndrive

Evinrude
Does Not Apply
6.0 x 6.0 x 8.0 Inches

Ratings for Evinrude (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Doug Russell Marine -

Features

Genuine factory original Evinrude HPF Gear Lube
Kit includes 2 Quarts lower unit fluid and gear lube pump
Show More
Top 27

Mercury SAE 90 High Performance Gear Lube with Pump for Outboards and Sterndrives, 1 Quart - 8M0222068

MERCURY
8M0222068

Ratings for MERCURY (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Wakeboss -

Features

For use in all engines 75hp and above, including Mercury, Mariner and MerCruiser
SAE 90 weight gear lube
Show More
Top 28

Mercury 80W-90 Premium Gear Lube for Outboards and Sterndrives, 8 oz

MERCURY
802844K01
8.0 x 8.0 x 17.0 inches
8.0 pounds

Ratings for MERCURY (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
ZIC Sales -
HARVARD MARINE 4,017

Features

Formulated to protect against corrosion and excessive wear
Designed for outboard applications below 75hp
Show More

Quicksilver 8M0128380 80W-90 Motorcycle Hypoid Gear Oil – 1 Qt.

Quicksilver
8M0128380

Ratings for Quicksilver (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

PERFORMANCE – Used in shaft drive or separate clutch transmissions for optimum performance and gear longevity
PROTECTION – Provides maximum gear protection against wear, corrosion, and oxidation all while maintaining optimum performance
Show More

Lucas Oil Lucas 10045 Heavy Duty 85/140 Gear Oil - 1 Gallon

Lucas Oil
LUC10045
6.0 x 6.0 x 12.0 inches
0.0006 Pounds

Ratings for Lucas Oil (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
G.P.S. 1,215
Amazon.com -
SG MARKETPLACE -
J J Motorsports -
B and S Supply 5,895

Features

Fit type: Vehicle Specific
Package Dimensions: 31.0 H x 15.0 L x 15.0 W (centimeters)
Show More

Top 10 Outboard Gear Oils - Verified to Buy (September 2026)

Top 10 Outboard Gear Oils Brands on Amazon

Here is the list of top-rated brands that were evaluated by CherryPicks.

  • Honda
  • Mazda
  • SUZUKI
  • Valvoline
  • Lucas Oil
  • Tohatsu
  • Quicksilver
  • MERCURY
  • Sierra
  • Royal Purple

Related Outboard Gear Oils Guides

For more personalized Outboard Gear Oils guides, Check those pages,


Top 10 Outboard Gear Oils Sellers: CPR Seller Rank List

CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.

Rank Name Yearly Feedbacks Avg. Ratings
🥇 VerSure 210,352 4.9
🥈 G.P.S. 42,949 4.9
🥉 R/A Hoerr Incorporated 37,533 4.9
4 LEADERS RPM 30,159 4.8
5 Acme Tools 22,332 4.7
6 HARVARD MARINE 16,111 4.3
7 DataAlchemy 15,846 4.4
8 The Parts Department 14,891 4.5
9 Vera Tools 12,441 4.8
10 Shop Eddies 🏁✳️🚚 12,229 4.5
View or download top Outboard Gear Oils seller & rating report
VerSure [210352] G.P.S. [42949] R/A Hoerr Incorporated [37533] LEADERS RPM [30159] Acme Tools [22332] HARVARD MARINE [16111] DataAlchemy [15846] The Parts Department [14891] Vera Tools [12441] Shop Eddies 🏁✳️🚚 [12229] VerSure 51% G.P.S. 10% R/A Hoerr Incorporated 9% LEADERS RPM 7% Acme Tools 5% HARVARD MARINE 4% DataAlchemy 4% The Parts Department 4% Vera Tools 3% Shop Eddies 🏁✳️🚚 3%

[Get] Outboard Gear Oils Deals (✅Exclusively for Prime)

What does "Amazon Fulfilled" Mean?

Amazon Fulfilled refers to products handled by Amazon's logistics, which indicates that the product is stored, packed, and shipped by Amazon from one of its fulfillment centers.

When you order a product that is "Amazon Fulfilled," Amazon takes care of the storage, packing, shipping, and customer service for that product. This often ensures quicker delivery and better customer service compared to products that are not fulfilled by Amazon. It also means that the product is eligible for Amazon's return policy.

What does "Prime" Mean?

"Prime" refers to Amazon Prime Member (Join Amazon Prime Now), which indicates eligibility for Prime benefits. When you see "Prime" next to a product on Amazon, This generally means that if you are  an Amazon Prime member, you can get free two-day shipping on that product, and sometimes even same-day or one-day shipping depending on your location.

Prime members also have access to other benefits, including 2-Day ShippingExclusive Member DealsPrime VideoBuy With PrimeAmazon MusicPrime Gaming, and more.

Shop Prime Outboard Gear Oils Deals

What does "Free Shipping" Mean?

"Free Shipping" means that you will not be charged additional fees for the shipping of that product. However, unlike "Prime," which usually guarantees fast two-day shipping, "Free Shipping" doesn't necessarily mean fast shipping.

Sometimes there might be a minimum purchase requirement to qualify for free shipping if you are not a Prime member. For Prime members, the "Free Shipping" usually refers to the free two-day shipping that is one of the benefits of the Prime membership.


Why Should You Trust Us?

Now hundreds and thousands of Oils & Fluids supplies are available on Amazon, Picking the right one is not easy, and that may take a lot of your time, Right? and What is the best Outboard Gear Oils to buy for new September 2026?

CherryPicks’s Methodology for Evaluating Outboard Gear Oils

We developed the CherryRatings-AI system to identify and score reviews and the CherryPicks-AI ranking system that uses TensorFlow framework to generate the best list, It will help us evaluate Oils & Fluids items that sell on Amazon. The score of items is based on over ten parameters such as analyzing customer review content, product reviewing rating statistics, brand reputation evaluation, comparing product price with features, etc, You can visit How We Rank to learn more in detail.

We collected and analyzed 135 of Outboard Gear Oils reviews based on our selection criteria. It helped us shortlist the top qualified and rated Outboard Gear Oils for Oils & Fluids, We found that most customers choose Outboard Gear Oils with an average price of $28.36, and the top brands are Lucas Oil, Valvoline, Liqui Moly, Honda, Mobil, Quicksilver, Royal Purple, MERCURY, Mazda And Sierra

Then our expert-level editors reviewed all those quality items and selected the top 30 Outboard Gear Oils for you, We have researched hundreds of sellers and picked the top sellers for Oils & Fluids, including Amazon Resale, VerSure, G.P.S., R/A Hoerr Incorporated, LEADERS RPM, Acme Tools, HARVARD MARINE, DataAlchemy, The Parts Department, Vera Tools, Shop Eddies 🏁✳️🚚 And B and S Supply. The Genuine Honda 08200-9014 Hypoid Gear Oil Hgo-1 ... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 615 consumers with an average rating of 4.8.

We've helped a lot of satisfied users get the right Automotive product based on their needs, and save lots of time for them to pick Outboard Gear Oils to buy.


Written By Paulo Santos Goncalves

Paulo S. Goncalves is a student of mechanical engineering with hands-on experience in automotive repair — a skill he picked up in his early days. He would be helping you make the best choice regarding automative parts and products here on this site.