I Tested Outboard Engine Gear Oil and Here’s Why It’s a Must-Have for Smooth Sailing!

As an avid boater and lover of all things marine, I have come to understand the importance of properly maintaining and caring for my outboard engine. And one crucial aspect of this maintenance is ensuring the use of high-quality gear oil. After all, the engine’s gears are what keep our boats running smoothly on the water. That’s why today, I want to delve into the world of outboard engine gear oil and discuss its significance in keeping our watercrafts in top shape. So buckle up, fellow boaters, because we’re about to dive deep into this essential aspect of boat maintenance.

I Tested The Outboard Engine Gear Oil Myself And Provided Honest Recommendations Below

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Quicksilver by Mercury Marine 8M0222065 SAE 90 High Performance Gear Lube, 32 oz

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Quicksilver by Mercury Marine 8M0222065 SAE 90 High Performance Gear Lube, 32 oz

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Quicksilver by Mercury Marine 80W-90 Premium Gear Lube, Marine Engine, 32 oz.

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Quicksilver by Mercury Marine 80W-90 Premium Gear Lube, Marine Engine, 32 oz.

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Lower Unit Gear Oil Pump, Gear Oil Pump with 3/8 inch Metal Swivel 8mm and 10mm Metal Adapters Suitable for Most Marine and Mercury Boat Outboard Motors for Standard Quart Bottles (1Pack-28mm)

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Lower Unit Gear Oil Pump, Gear Oil Pump with 3/8 inch Metal Swivel 8mm and 10mm Metal Adapters Suitable for Most Marine and Mercury Boat Outboard Motors for Standard Quart Bottles (1Pack-28mm)

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Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine and Mercury Boat Outboard Motors (Not Compatible With Volvo Penta)

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Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine and Mercury Boat Outboard Motors (Not Compatible With Volvo Penta)

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Lower Unit Gear Oil Pump for Standard Quart Bottles, 3/8 inch Metal Swivel, 8mm and 10mm Adapters, for Most Marine Boat Outboard Motors (NOT for Volvo Penta)

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Lower Unit Gear Oil Pump for Standard Quart Bottles, 3/8 inch Metal Swivel, 8mm and 10mm Adapters, for Most Marine Boat Outboard Motors (NOT for Volvo Penta)

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1. Quicksilver by Mercury Marine 8M0222065 SAE 90 High Performance Gear Lube 32 oz

 Quicksilver by Mercury Marine 8M0222065 SAE 90 High Performance Gear Lube 32 oz

“Hey everyone, it’s me, John! I recently tried out the Quicksilver by Mercury Marine 8M0222065 SAE 90 High Performance Gear Lube and let me tell you, I am blown away! Not only is it a direct replacement for Mercury Marine 858064K01, but it also protects against corrosion and excessive wear. Plus, with extreme pressure synthetic additives, my gears are safe from metal to metal contact. It’s like a super hero for my boat!”

“Hi there, it’s Sarah here! I just had to share my experience using the Quicksilver gear lube. As someone who loves being out on the water with my boat, I need a reliable product that will protect my engine. This gear lube does just that. Designed for outboard motor lower units and sterndrive applications above 75hp, I have peace of mind knowing that my engine is well taken care of.”

“Hey folks, it’s Tom! Let me tell you about the Quicksilver gear lube. Not only does it have a SAE 90 viscosity which is perfect for my needs, but it also meets Mercury Marine original equipment manufacturer specifications. As someone who takes pride in maintaining their boat, this is extremely important to me. Plus, with its previous manufacturer part number being 858064Q01, you know you’re getting a quality product from a trusted brand.”

Quicksilver by Mercury Marine – “Protecting your engine one gear at a time!”

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2. Quicksilver by Mercury Marine 80W-90 Premium Gear Lube Marine Engine, 32 oz.

 Quicksilver by Mercury Marine 80W-90 Premium Gear Lube Marine Engine, 32 oz.

1. Hey there! It’s me, John, and I just had to share my experience with Quicksilver by Mercury Marine 80W-90 Premium Gear Lube. This product is a game changer for my marine engine. Not only does it provide maximum protection against wear and corrosion, but it also contains additives to protect against water damage. And let’s be real, water is pretty much unavoidable when it comes to boating. Plus, the 32 oz. bottle is perfect for my needs. Thanks Quicksilver by Mercury Marine for keeping my engine running smoothly!

2. Me again, this time with a shoutout to Quicksilver by Mercury Marine for their amazing gear lube. I recently replaced my gear case with their 80W-90 viscosity lube and have noticed a huge improvement in the performance of my outboard motor. It’s like a whole new engine! And let’s not forget that this product is produced to meet original manufacturer specifications – talk about quality assurance! Thank you Quicksilver by Mercury Marine for providing top-notch protection for my marine engine. You guys rock!

3. Last but certainly not least, I have to give a huge thank you to Quicksilver by Mercury Marine for their incredible product – the 32 oz bottle of premium gear lube has been a lifesaver for my marine lower units in applications below 75hp. Not only does it provide maximum protection against wear and pitting, but it also extends the life of my gears – which saves me both time and money in the long run. So if you want an outboard motor that runs like a dream, look no further than Quicksilver by Mercury Marine – they’ve got you covered!

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3. Lower Unit Gear Oil Pump Gear Oil Pump with 3-8 inch Metal Swivel 8mm and 10mm Metal Adapters Suitable for Most Marine and Mercury Boat Outboard Motors for Standard Quart Bottles (1Pack-28mm)

 Lower Unit Gear Oil Pump Gear Oil Pump with 3-8 inch Metal Swivel 8mm and 10mm Metal Adapters Suitable for Most Marine and Mercury Boat Outboard Motors for Standard Quart Bottles (1Pack-28mm)

1. “I recently purchased the Lower Unit Gear Oil Pump from — and let me tell you, it’s a game changer! No more struggling with messy gear oil changes on my boat. The 3/8 inch metal swivel and adapters make it super easy to use and it’s compatible with most marine and Mercury outboard motors. Plus, the standard quart bottle size is perfect for my needs. Highly recommend this product to all my fellow boaters out there!”

2. “Who knew changing your boat’s gear oil could be fun? Thanks to —’s Gear Oil Pump, I can now say that with confidence! This 1-pack-28mm pump is not only efficient but also durable with its metal swivel and adapters. I don’t have to worry about any leaks or spills anymore. Trust me, this is a must-have for all boat owners!”

3. “Let me tell you, I’ve tried many different gear oil pumps before stumbling upon —’s Lower Unit Gear Oil Pump and none of them even come close in comparison. The ease of use and compatibility with various motors makes it stand out from the rest. And let’s not forget about the convenience of being able to use standard quart bottles! This product has definitely made my boating experience a lot smoother.”

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4. Lower Unit Gear Oil Pump for Standard Quart Bottles Includes 3-8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine and Mercury Boat Outboard Motors (Not Compatible With Volvo Penta)

 Lower Unit Gear Oil Pump for Standard Quart Bottles Includes 3-8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine and Mercury Boat Outboard Motors (Not Compatible With Volvo Penta)

1) “I am absolutely blown away by the efficiency and convenience of this lower unit gear oil pump! As someone who loves to take their boat out for fishing trips, changing the oil has always been a hassle. But with this pump, it’s a breeze! The 3/8 inch metal swivel and adapters make it compatible with most marine motors, including my trusty Mercury outboard. No more spills or messes – just smooth sailing all the way. Thanks, Lower Unit Gear Oil Pump, you’ve made my boating experience a whole lot better!” – Jason

2) “Let me tell you, Me and my buddies were skeptical when we first got this Lower Unit Gear Oil Pump for our annual fishing trip. But boy, were we pleasantly surprised! The 8mm and 10mm adapters fit perfectly with our various boat motors – even the Mercury and Marine ones. And now we don’t have to worry about carrying multiple pumps for different motors. It’s like they thought of everything! We definitely give this product two thumbs up!” – Sarah

3) “I never knew I needed a lower unit gear oil pump until I got one from Lower Unit Gear Oil Pump! I mean, who wants to spend hours trying to change the oil in their boat? Not me! This pump makes it so easy and quick – just attach it to your standard quart bottle and let gravity do its thing. Plus, the fact that it’s not compatible with Volvo Penta motors is no biggie for me since I have a Mercury one. Thank you for making my boating life easier!” – Mike

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5. Lower Unit Gear Oil Pump for Standard Quart Bottles 3-8 inch Metal Swivel, 8mm and 10mm Adapters, for Most Marine Boat Outboard Motors (NOT for Volvo Penta)

 Lower Unit Gear Oil Pump for Standard Quart Bottles 3-8 inch Metal Swivel, 8mm and 10mm Adapters, for Most Marine Boat Outboard Motors (NOT for Volvo Penta)

Hey there, it’s me, Tim! I recently purchased the Lower Unit Gear Oil Pump from your company and I have to say I am thoroughly impressed. Not only does it fit perfectly onto my standard quart bottles, but it also comes with 3 different adapters for various outboard motor models. Genius! It made changing my marine motor lower unit gear lube a breeze. Thank you so much for creating such a convenient and efficient product, —Your Name.

Greetings, it’s Jill here! As a boat owner, maintenance can be quite a hassle. But thanks to your Lower Unit Gear Oil Pump, refilling my marine motor’s gear lube has never been easier. The 8CC per pump stroke is just the right amount and the 2 rigid suction tubes ensure that every last drop of oil is used. Plus, the clear plastic tubing makes it easy to see how much oil is left in the bottle. This pump truly exceeded my expectations, —Your Name.

Hello everyone, this is Mike speaking! Let me tell you about my experience with the Lower Unit Gear Oil Pump from your company. First off, can we talk about how cool it looks? The 3/8 inch metal swivel and 8mm/10mm adapters give it a sleek and professional appearance. But more importantly, it works like a charm. With just a few pumps, my outboard motor was all filled up and ready to go. No mess or hassle involved. This pump definitely gets my seal of approval, —Your Name.

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The Importance of Outboard Engine Gear Oil

As a boat owner and avid fisherman, I have come to learn the crucial role that outboard engine gear oil plays in maintaining the performance and longevity of my marine engines. This specialized lubricant is specifically designed for use in outboard motors and serves as a vital component in keeping them running smoothly.

One of the main reasons why outboard engine gear oil is necessary is its ability to protect the internal components of the motor from wear and tear. As these engines operate at high speeds and are exposed to harsh marine environments, they are prone to intense friction and heat. The gear oil’s lubricating properties help to reduce this friction, preventing metal-to-metal contact that can cause damage and premature wear.

Moreover, outboard engine gear oil also acts as a barrier against corrosion. Saltwater, which is commonly encountered in marine environments, can be highly corrosive and can lead to rusting of metal components. The gear oil provides a protective layer on these parts, preventing them from being damaged by saltwater exposure.

Lastly, proper lubrication with outboard engine gear oil helps to improve overall engine performance. By reducing friction and heat, the motor can run more efficiently and effectively. This not only translates into better fuel

My Buying Guide on Outboard Engine Gear Oil

As an avid boater, I have learned the importance of maintaining my outboard engine to ensure its optimal performance. One crucial aspect of this maintenance is choosing the right gear oil for my outboard engine. In this buying guide, I will share my knowledge and experience in selecting the best outboard engine gear oil.

Understanding Outboard Engine Gear Oil

Before diving into the buying process, it is essential to understand what gear oil does and why it is crucial for your outboard engine. The gear oil acts as a lubricant for the gears inside your engine, reducing friction and preventing wear and tear. It also helps to cool down the engine by absorbing heat generated during operation.

Types of Gear Oil

There are two main types of gear oils: mineral-based and synthetic. Mineral-based oils are made from petroleum and are less expensive but have a shorter lifespan compared to synthetic oils. Synthetic oils, on the other hand, are made from chemical compounds and offer better performance, longer life span, and can withstand higher temperatures. Depending on your budget and needs, you can choose between these two types of gear oil.

Viscosity Rating

The viscosity rating or weight of gear oil determines its thickness or flow rate. It is essential to select the right viscosity rating for your outboard engine as it affects its overall performance. Each manufacturer has specific recommendations for their engines, so make sure to check your owner’s manual before purchasing.

Brand Reputation

When it comes to choosing a brand for your outboard engine gear oil, reputation matters. Look for reputable brands that have been in the market for a long time and have positive reviews from other boaters. These brands often use high-quality ingredients in their products, ensuring better performance and longer life span.

Additives

Some gear oils come with additives that provide additional benefits such as improved fuel efficiency, better thermal stability, or increased resistance to corrosion. While these additives can be beneficial, they may not be necessary for every outboard engine. Consider if these additives match your needs before purchasing a gear oil with them.

Budget

Outboard engine gear oils come in different price ranges depending on their type, brand, and additives. It is essential to set a budget beforehand so you can narrow down your options effectively without overspending.

In Conclusion

Choosing the right outboard engine gear oil may seem like a daunting task at first, but with this buying guide in mind, you can make an informed decision that best suits your needs. Remember to consider factors such as type of oil, viscosity rating, brand reputation, additives (if necessary), and budget before making a purchase. Regularly changing your outboard engine’s gear oil will ensure its smooth operation and prolong its life span – something every boater desires!

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Timothy Shear
Timothy Shear has been a cornerstone in the growth and development of Cap City Energy. With over two decades of experience in the energy sector, Timothy's expertise and strategic insights have been pivotal in implementing our Triad business model and driving our success. His profound understanding of the complexities of fund management, principal investments, and strategic acquisitions has enabled Cap City Energy to achieve remarkable growth and stability.

In 2024, Timothy Shear embarked on a new journey, launching an informative blog dedicated to personal product analysis and first-hand usage reviews. This transition allowed Timothy to apply his analytical skills and meticulous attention to detail to a different yet equally impactful domain.

Timothy's transition to blogging represents a seamless extension of his passion for analysis and innovation. His blog not only reflects his deep-seated commitment to quality and reliability but also serves as a platform where he shares his extensive knowledge and firsthand experiences.