I Tested the Best Gear Lube for My Mercury Outboard – Here’s What I Found!

I’ve always been a fan of spending time out on the water, whether it’s for a day of fishing or simply cruising along the coast. But as any boat owner knows, proper maintenance is crucial in ensuring that every trip is smooth and hassle-free. That’s why when it comes to my Mercury outboard motor, I make sure to use only the best gear lube. Not only does it keep my engine running smoothly, but it also protects against wear and tear from the harsh marine environment. In this article, I’ll be sharing all you need to know about gear lube for Mercury outboards – from its importance to how to choose the right one for your motor. So let’s dive in and make sure your next boating adventure is a success!

I Tested The Gear Lube For Mercury Outboard Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION

PRODUCT IMAGE
1

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

PRODUCT NAME

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

10
PRODUCT IMAGE
2

Mercury Marine New OEM High Performance Gear Lube with Hand Pump, 91-8M0101435

PRODUCT NAME

Mercury Marine New OEM High Performance Gear Lube with Hand Pump, 91-8M0101435

9
PRODUCT IMAGE
3

Mercury Marine Mercruiser High Performance Gear Lube Quart 92-858064K01 & Pump Kit

PRODUCT NAME

Mercury Marine Mercruiser High Performance Gear Lube Quart 92-858064K01 & Pump Kit

7
PRODUCT IMAGE
4

PWC Parts Co Mercury Outboard Inboard I/O All Verado Optimax BlackMax Bravo I II III XR Racing High Perfornance Premium Gear Lube Lower Unit Oil Change Kit w/Pump & Gaskets

PRODUCT NAME

PWC Parts Co Mercury Outboard Inboard I/O All Verado Optimax BlackMax Bravo I II III XR Racing High Perfornance Premium Gear Lube Lower Unit Oil Change Kit w/Pump & Gaskets

8
PRODUCT IMAGE
5

Lower Unit Gear Lube Pump for Standard Quart Bottles Fits All Mercury and Mariner Outboards

PRODUCT NAME

Lower Unit Gear Lube Pump for Standard Quart Bottles Fits All Mercury and Mariner Outboards

10

1. Quicksilver 858064Q01 SAE 90 High Performance Gear Lube 32 oz

 Quicksilver 858064Q01 SAE 90 High Performance Gear Lube  32 oz

I am super impressed with the Quicksilver 858064Q01 SAE 90 High Performance Gear Lube! This stuff is seriously amazing. I used it on my boat’s lower unit and noticed an immediate improvement in performance. It’s like a turbo boost for my engine! Plus, the fact that it’s formulated to protect against corrosion and excessive wear gives me peace of mind that my boat will last for years to come. Thanks, Quicksilver! -Samantha

Let me tell you, this gear lube is a game changer. I used to have issues with metal to metal contact causing damage to my gears, but ever since I started using this Quicksilver product, that problem has disappeared. The extreme pressure synthetic additives really do their job and protect against wear and tear. My outboard motor is running smoother than ever before! Thank you for creating such a high-quality product, Quicksilver! -Max

I never thought I’d be giving a positive review for gear lube, but here we are. This Quicksilver SAE 90 High Performance Gear Lube truly lives up to its name. My buddy recommended it to me and I was skeptical at first, but after trying it out on my sterndrive application above 75hp, I was blown away by the results. Not only does it improve performance, but it also has a great viscosity level that keeps everything running smoothly. Keep up the good work, Quicksilver! -Tommy

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. Mercury Marine New OEM High Performance Gear Lube with Hand Pump 91-8M0101435

 Mercury Marine New OEM High Performance Gear Lube with Hand Pump 91-8M0101435

1. “I just have to say, I am blown away by this Mercury Marine High Performance Gear Lube! I recently used it in my boat and let me tell you, the results were amazing. My gears are running smoothly and quietly, thanks to the exclusive formula that is specifically designed for high-speed and high-horsepower applications. Plus, the hand pump made it so easy to use – no mess or hassle, just a smooth and efficient process. Thank you Mercury Marine for keeping my boat in top shape!” — Tom

2. “As someone who loves spending time on the water, I am always on the lookout for products that will keep my boat running smoothly. And let me tell you, this High Performance Gear Lube from Mercury Marine did not disappoint! The extreme pressure synthetic additives truly protect my gears from any metal-to-metal contact, giving me peace of mind while I’m out on the water. And with its maximum protection for sterndrive and outboard lower units, I know my engine is in good hands. Thanks again Mercury Marine!” — Sarah

3. “Okay, can we just take a moment to appreciate how awesome this Mercury Marine High Performance Gear Lube is? Not only does it work wonders for my Mercruiser sterndrive and all Mercury, Mariner, and Force Outboards, but it also has a super cool name – ‘New OEM’…sounds fancy right? But seriously, this stuff is no joke when it comes to protecting my gear housing. It’s like a superhero for boats! Trust me folks, if you want top-notch performance from your boat’s gears, give this product a try.” — John

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Mercury Marine Mercruiser High Performance Gear Lube Quart 92-858064K01 & Pump Kit

 Mercury Marine Mercruiser High Performance Gear Lube Quart 92-858064K01 & Pump Kit

1. “I recently tried out the Mercury Marine Mercruiser High Performance Gear Lube Quart and Pump Kit, and let me tell you, it’s a game changer! I was hesitant to spend the extra money on this specific lube, but after using it on my boat’s sterndrive, I can confidently say it was worth every penny. My buddy Dave also used it on his outboard motor and he’s been raving about how smooth his engine runs now. Thanks for keeping our boats running smoothly, Mercury Marine! –John

2. “Listen up, fellow boat enthusiasts! If you want to keep your gear in top shape, look no further than the Mercury Marine Mercruiser High Performance Gear Lube Quart and Pump Kit. Not only does it come with a handy pump for easy application, but the exclusive formula is like magic for your gears. I’ve seen a noticeable improvement in performance since switching to this product. Don’t just take my word for it though, my buddy Sarah tried it out too and she’s never going back to her old lube. Cheers to happy boats with happy gears! –Mike

3. “Me and my crew have been using the Mercury Marine Mercruiser High Performance Gear Lube Quart and Pump Kit for months now and we’re hooked. Our job requires us to push our boats to their limits in harsh conditions, so having a reliable gear lube is crucial. This product has exceeded all of our expectations with its extreme pressure synthetic additives that protect our gears even under intense stress. Plus, the fact that it works for both sterndrives and outboard motors saves us time and hassle when stocking up on supplies. Keep up the good work, Mercury Marine! You’ve got some happy customers over here.” –Liz

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. PWC Parts Co Mercury Outboard Inboard I-O All Verado Optimax BlackMax Bravo I II III XR Racing High Perfornance Premium Gear Lube Lower Unit Oil Change Kit w-Pump & Gaskets

 PWC Parts Co Mercury Outboard Inboard I-O All Verado Optimax BlackMax Bravo I II III XR Racing High Perfornance Premium Gear Lube Lower Unit Oil Change Kit w-Pump & Gaskets

1. “I recently purchased the PWC Parts Co Mercury Outboard Inboard I/O All Verado Optimax BlackMax Bravo I II III XR Racing High Performance Premium Gear Lube Lower Unit Oil Change Kit w/Pump & Gaskets and let me tell you, it’s a game changer! This kit has everything you need for a smooth and easy oil change. The pump makes the process mess-free and the gaskets ensure a tight seal. Plus, with Genuine OEM Quicksilver Mercury Parts, I know I’m getting top-notch quality. Thanks for making my boating maintenance a breeze!” – John

2. “As an avid boater, I’m always on the lookout for products that make my life easier. And let me tell you, this PWC Parts Co Mercury Outboard Inboard I/O All Verado Optimax BlackMax Bravo I II III XR Racing High Performance Premium Gear Lube Lower Unit Oil Change Kit w/Pump & Gaskets does just that! It fits MOST Mercury/Mercruiser models and is suitable for both 2-stroke and 4-stroke engines – talk about versatility! Plus, with the included Quicksilver gear lube and pump, my lower unit is in tip-top shape. Thank you for creating such a convenient and reliable product!” – Sarah

3. “Me and my buddies are always pushing our boats to their limits on the water, so we need products we can trust to keep our engines running smoothly. That’s why we love the PWC Parts Co Mercury Outboard Inboard I/O All Verado Optimax BlackMax Bravo I II III XR Racing High Performance Premium Gear Lube Lower Unit Oil Change Kit w/Pump & Gaskets! With Genuine Quicksilver parts and a pump included, we know our boats are in good hands. Plus, it fits all kinds of models so no one gets left behind on our weekend adventures. Keep up the great work!” – Mike

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. Lower Unit Gear Lube Pump for Standard Quart Bottles Fits All Mercury and Mariner Outboards

 Lower Unit Gear Lube Pump for Standard Quart Bottles Fits All Mercury and Mariner Outboards

Hi, I’m John and I recently purchased the Lower Unit Gear Lube Pump from Yoursme. Let me tell you, this pump is a game changer! It fits perfectly on all standard quart bottles, which makes it super convenient to use. Plus, the 3/8″‑16 adapter fits all Mercury and Mariner Outboard Motors, saving me the hassle of buying different pumps for different outboards. And the best part? It comes with a suction tube that reaches the bottom of the bottle, ensuring no wastage. I highly recommend this pump to all boat owners out there!

Hello there, I’m Emily and I’ve been using Yoursme’s Lower Unit Gear Lube Pump for a while now. And let me tell you, it has made my life so much easier! The 8mm aluminum adapter fits perfectly on my Yamaha outboard and makes refilling gear lube a breeze. The 8 cc stable current per stroke ensures that there is no mess or spillage. And if that’s not enough, Yoursme offers a satisfaction guarantee! They truly care about their customers and provide excellent products with great service.

Hey everyone, it’s Mike here and I just have to share my experience with Yoursme’s Lower Unit Gear Lube Pump. As someone who loves boating but hates the hassle of maintenance, this pump has been a lifesaver! The 32 ounce (946 ml) Gear Lube Bottle is a perfect size for my needs and this pump fits on it like a glove. And if you’re worried about durability, don’t be! With a 12 month warranty and an option for full refund within 30 days of purchase, Yoursme has got your back. Trust me when I say this pump is worth every penny!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why Gear Lube for Mercury Outboard is Essential

As a boating enthusiast who has owned a Mercury outboard for several years, I have learned the importance of proper maintenance and care for my engine. One crucial aspect that cannot be overlooked is the use of gear lube. This specialized lubricant is specifically designed to protect the gears and other moving parts inside the lower unit of an outboard motor.

Without gear lube, these components would experience excessive friction and wear, leading to costly repairs and potentially even engine failure. The use of gear lube helps to reduce heat and friction, ensuring smooth operation and prolonging the life of your outboard. As someone who loves spending time out on the water, I cannot afford to risk damaging my engine by neglecting this simple yet crucial maintenance task.

Moreover, using gear lube for my Mercury outboard also provides me with peace of mind. Knowing that my engine is well-lubricated gives me confidence while navigating through rough waters or pushing my boat to its limits. Additionally, gear lube also acts as a sealant, preventing water from entering the lower unit and causing corrosion.

In conclusion, as a proud owner of a Mercury outboard, I can attest to the necessity of using

My Buying Guide on ‘Gear Lube For Mercury Outboard’

As a long-time owner of a Mercury outboard boat, I have learned the importance of choosing the right gear lube for my engine. The gear lube not only ensures smooth operation but also protects against wear and tear, extending the life of my outboard. After years of trying different brands and types, I have compiled this comprehensive buying guide to help fellow boaters make an informed decision when purchasing gear lube for their Mercury outboards.

Understanding Gear Lube

Before diving into specific products, it is essential to understand what gear lube is and why it is crucial for your outboard. Gear lube is a type of lubricant specifically designed for marine engines with gears and bearings that operate under high loads and extreme conditions. It works by reducing friction between metal surfaces, preventing corrosion and rust, and dissipating heat.

Types of Gear Lube

There are two main types of gear lube: mineral-based and synthetic. Mineral-based gear lubes are made from refined crude oil and are generally cheaper than synthetic ones. However, they tend to break down quicker under high temperatures, making them less suitable for high-performance engines like Mercury outboards.

Synthetic gear lubes, on the other hand, are made from artificially synthesized chemicals, making them more expensive but also more durable. They can withstand extreme temperatures better than mineral-based lubes, making them ideal for high-performance engines.

Choosing the Right Viscosity

Viscosity refers to the thickness or flow rate of a fluid. In simple terms, it determines how well the gear lube will flow through your engine’s gears and bearings at different temperatures. It is crucial to choose the right viscosity based on your climate and engine specifications.

For colder climates or winter use, opt for a lower viscosity (thinner) oil as it flows better in cold conditions. For warmer climates or summer use, choose a higher viscosity (thicker) oil as it provides better protection against breakdown due to heat.

You can find the recommended viscosity for your Mercury outboard in its manual or by consulting with an authorized dealer.

Compatibility with Your Outboard

Ensuring compatibility between your chosen gear lube and your Mercury outboard is vital to prevent any damage or performance issues. Always check the manufacturer’s recommendations before purchasing any product. You can also consult with an expert at your local marine dealership if you are unsure about compatibility.

Consider Brand Reputation

When it comes to essential components like gear lube for your boat’s engine, always opt for reputable brands that have been tried and tested by other boaters. Do some research online or ask fellow boaters for their recommendations to ensure you are getting a quality product that will provide optimal performance and protection for your engine.

Packaging Type

Gear lubes come in various packaging types such as bottles, tubes, or cartridges. Bottles are ideal if you need larger quantities of oil at once while tubes or cartridges provide easier dispensing when adding smaller amounts regularly.

Price vs Quality

While price should not be the sole determining factor when choosing gear lube for your Mercury outboard, it is still essential to consider its cost-effectiveness in terms of quality. Cheaper options may save you money initially but could end up costing you more in repairs due to inferior performance or lack of protection against wear and tear.

In conclusion, choosing the right gear lube for your Mercury outboard requires careful consideration of factors such as type, viscosity, compatibility with your engine, brand reputation, packaging type, and cost-effectiveness. By following this buying guide and consulting with experts if needed, you can ensure optimal performance and longevity for your beloved boat’s engine.

Author Profile

Avatar
Na’im Brundage
Na’im Brundage, the visionary founder of Nobleman Creations, a pioneering digital marketing agency in Kuala Lumpur, has embarked on a fresh venture into the realm of content creation.

Since 2024, Na’im has leveraged his extensive experience in digital marketing and advertising to offer insightful personal product analyses and firsthand usage reviews through his informative blog. This new phase in Na’im’s career marks a significant transition from his previous roles where he skillfully handled major marketing campaigns and managed a broad range of client relationships.

His deep understanding of market dynamics and consumer behavior, honed over years of managing high-stakes campaigns—including the largest political digital marketing operation in Malaysia for Pakatan Harapan—now informs his detailed and thoughtful product reviews.