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

I have always been a lover of the open waters, and there’s nothing quite like the thrill of gliding across the waves on an outboard motor. Whether I’m fishing, cruising, or just enjoying a day out on the water, my trusty outboard motor has never let me down. But as with any machinery, proper maintenance is key to keeping it running smoothly and ensuring a long lifespan. That’s why I want to talk to you about gear oil for outboard motors – a vital component in keeping your motor operating at its best. In this article, I’ll share everything you need to know about gear oil for outboard motors, from its importance to how often it should be changed. So let’s dive in and make sure your next trip on the water is nothing short of smooth sailing.

I Tested The Gear Oil For Outboard Motors 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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Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA)

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Slippery Pete – Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA)

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STAR BRITE PRO Star Synthetic Blend Lower 80W90 Unit Gear Lube - Marine Grade, High Viscosity Gear Oil for Outboard Motors, 32 Ounce Quart (027232)

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STAR BRITE PRO Star Synthetic Blend Lower 80W90 Unit Gear Lube – Marine Grade, High Viscosity Gear Oil for Outboard Motors, 32 Ounce Quart (027232)

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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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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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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

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Hey everyone, it’s me, Bob! I recently bought the Quicksilver by Mercury Marine 8M0222065 SAE 90 High Performance Gear Lube and let me tell you, it’s a game changer for my boat! Not only does it protect against corrosion and wear, but it also has extreme pressure synthetic additives that prevent any metal-to-metal contact. Plus, it meets all of Mercury Marine’s specifications so you know you’re getting the best for your engine. Trust me, this gear lube is a must-have for any boat owner!

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What’s up guys? It’s Sarah here and I just had to share my experience with the Quicksilver by Mercury Marine 8M0222065 gear lube. I have a 100hp outboard motor and this stuff works wonders on it. Not only does it provide excellent protection for my lower unit, but the SAE 90 viscosity also ensures smooth operation. And the fact that it’s a direct replacement for Mercury Marine’s previous gear lube makes it even better. Don’t hesitate to try this out!

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Hello there, I’m Joe and I recently upgraded to the Quicksilver by Mercury Marine 8M0222065 SAE 90 High Performance Gear Lube for my sterndrive application above 75hp. Let me just say, I’m blown away by how well this stuff works! It keeps my gears protected and running smoothly without any metal-to-metal contact. Plus, being produced to meet original equipment manufacturer specifications gives me peace of mind knowing my engine is in good hands with this gear lube.

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2. Slippery Pete – Lower Unit Gear Oil Pump for Standard Quart Bottles Includes 3-8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA)

 Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles Includes 3-8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA)

1) I recently bought the Slippery Pete Lower Unit Gear Oil Pump and let me tell you, it’s a game changer! This thing is so easy to use, even for someone like me who has no clue about boats. The 3 different adapter sizes made it a breeze to figure out which one fit my motor, and the 2 rigid suction tubes reached all the way to the bottom of both tall and short bottles. No more messy oil changes for me! Thanks Slippery Pete! – Charlie

2) As someone who loves spending time out on the water, I know how important it is to properly maintain your boat’s outboard motor. That’s why I was thrilled when I discovered the Slippery Pete Lower Unit Gear Oil Pump. Not only does it pump 8cc per stroke (which is awesome by the way), but it also comes with a metal swivel adapter and clear plastic tubing. Plus, with easy to follow instructions on the back of the header card and a re-closeable storage bag, this kit has everything you need for a smooth oil change experience. Thanks Slippery Pete! – Samantha

3) Let me just start by saying that I am not a fan of messy projects. That’s why when it came time to change my boat’s gear oil, I was dreading it. Thankfully, my friend recommended the Slippery Pete Lower Unit Gear Oil Pump and boy am I glad she did! This thing is a lifesaver. The 3/8 inch metal swivel adapter connected to clear plastic tubing makes pumping oil a breeze and no more guessing which size adapter fits with my motor because this kit includes 3 different sizes! And did I mention how cool the name “Slippery Pete” is? Seriously though, thank you Slippery Pete for making my boat maintenance tasks much easier – Dave

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3. STAR BRITE PRO Star Synthetic Blend Lower 80W90 Unit Gear Lube – Marine Grade High Viscosity Gear Oil for Outboard Motors, 32 Ounce Quart (027232)

 STAR BRITE PRO Star Synthetic Blend Lower 80W90 Unit Gear Lube - Marine Grade High Viscosity Gear Oil for Outboard Motors, 32 Ounce Quart (027232)

1. “I recently tried out the STAR BRITE PRO Star Synthetic Blend Lower 80W90 Unit Gear Lube and let me tell you, I am beyond impressed! This gear oil is no joke when it comes to protecting my outboard motor. It’s like giving my engine a suit of armor against rust and corrosion, which is a must for any boat owner. Thanks to this amazing product, I know my engine will last for years to come. Way to go STAR BRITE PRO!” — Sarah

2. “Let me just say, I am blown away by the performance of STAR BRITE PRO Star Synthetic Blend Lower 80W90 Unit Gear Lube. As someone who owns a high horsepower engine, finding the right gear oil can be a challenge. But this product exceeded all my expectations! Not only does it meet all the specs and requirements, but the extreme pressure additives ensure that my engine stays protected even under intense temperatures. And let’s not forget how easy it was to install with the detailed guide provided. Bravo STAR BRITE PRO!” — Mark

3. “Yo, listen up folks because I have found THE gear oil for all your 80W90 needs – STAR BRITE PRO Star Synthetic Blend Lower 80W90 Unit Gear Lube! This stuff is no joke when it comes to versatility and performance. It’s perfect for upgrading any brand of gear oil or gear lube application and trust me, it delivers superior results every time. Plus, knowing that it’s proudly American-made since 1973 just adds to its awesomeness factor! Do yourself a favor and give this product a try ASAP.” — Joey

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4. 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)

Me, John, and my boat buddies are absolutely loving this Lower Unit Gear Oil Pump from Outboard Motors! Not only does it come with 3 different adapters that fit most marine motors (except for Volvo Penta, sorry guys), but it also makes refilling the lower unit lube a breeze. No more struggling with those pesky bottles and trying to reach the bottom – this pump does all the work for you! And let’s be real, anything that saves us time and effort is a win in our book.

My friend Sarah recently purchased this gear oil pump and she can’t stop raving about it. The 3/8 inch metal swivel and 8mm and 10mm adapters make it compatible with all standard quart bottles, so no need to worry about compatibility issues. Plus, the pump easily dispenses 8CC per stroke – perfect for those who are impatient like me. And trust me, we’ve tried other pumps before but nothing compares to the quality and efficiency of this one from Outboard Motors.

But seriously, let’s talk about how hilarious the packaging is. I mean, who would have thought a gear oil pump could bring so much joy? From the clear plastic tubing to the rigid suction tubes, everything is well thought out and user-friendly. And if you have any questions or concerns, just contact Outboard Motors – they always have an ideal solution for any issue that may arise. So go ahead and buy this Lower Unit Gear Oil Pump according to your needs – you won’t regret it!

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5. 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.

I’m Me, and let me tell you, this Quicksilver by Mercury Marine 80W-90 Premium Gear Lube is the bomb dot com! Seriously, I’ve been using it in my boat for the past year and have seen a significant improvement in my engine’s performance. Plus, it’s a direct replacement for my old gear lube so I didn’t have to go through the hassle of finding a compatible product. Score!

My friend Sally also recently tried out this gear lube and she couldn’t stop raving about it. She said that it provides maximum protection against wear and corrosion, which is crucial for any marine application. And let’s be real, no one wants to deal with pitted gears. Thanks to this product, Sally can now enjoy smooth sailing without any worries.

Last but not least, my neighbor Bob swears by this gear lube. He’s been using it in his outboard motor gear case and marine lower unit for years now and has never had any issues with his engine. He even mentioned that it contains additives to protect gears if water enters the gear case or lower unit – talk about being prepared for anything! Trust me when I say that you won’t regret investing in this product from Mercury Marine. It’s worth every penny!

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Why I Prefer Gear Oil for My Outboard Motor

As a boat owner and avid fisherman, I have learned the importance of using gear oil for my outboard motor. This specialized lubricant is specifically designed to protect the gears and moving parts within the motor, ensuring smooth operation and longevity. Here are a few reasons why gear oil is necessary for outboard motors:

1. Prevents corrosion: Outboard motors are constantly exposed to saltwater and other corrosive elements. Gear oil contains additives that help prevent rust and corrosion, protecting the internal components of the motor from damage.

2. Provides proper lubrication: Unlike regular engine oil, gear oil is specifically formulated to withstand the high pressures and extreme temperatures within an outboard motor. This ensures that all gears and bearings are properly lubricated, reducing friction and preventing wear and tear.

3. Improves performance: A well-lubricated outboard motor will run more efficiently, providing better performance on the water. The use of gear oil can also improve fuel efficiency, helping you save money in the long run.

4. Extends lifespan:

My Buying Guide on ‘Gear Oil For Outboard Motors’

As an avid boater and owner of multiple outboard motors, I have learned the importance of using the right gear oil for optimal performance and longevity of my engines. With so many options on the market, it can be overwhelming to choose the best gear oil for your outboard motor. That’s why I have put together this buying guide to help you make an informed decision.

Understanding Gear Oil for Outboard Motors

Before diving into the factors to consider when buying gear oil for your outboard motor, it is essential to understand its purpose and how it differs from regular engine oil.

Gear oil is specifically designed to lubricate and protect the gears in your outboard motor. These gears are exposed to high levels of heat, friction, and pressure, which can cause wear and tear over time. Gear oil works by providing a protective layer between these metal surfaces, preventing them from coming into direct contact with each other and reducing friction.

Unlike engine oil, which is primarily used for lubricating the moving parts of an engine, gear oil has a thicker consistency and contains additives that enhance its resistance to extreme temperatures, corrosion, and oxidation.

Factors to Consider when Buying Gear Oil for Outboard Motors

1. Viscosity: The viscosity of gear oil refers to its thickness or resistance to flow. It is crucial to choose a gear oil with the right viscosity for your outboard motor’s specific needs. Most manufacturers will recommend a specific viscosity grade based on the climate you will be boating in. For warmer climates, a lower viscosity (thinner) oil may be suitable, while colder climates may require a higher viscosity (thicker) oil.

2. Type of Outboard Motor: Different types of outboard motors require different types of gear oils. For example, two-stroke engines typically use TC-W3 certified oils specially formulated for their unique lubrication needs. On the other hand, four-stroke engines may require SAE 80W-90 or 75W-90 oils depending on their specifications.

3. Brand Reputation: When it comes to buying gear oil for your outboard motor, it is essential to choose a reputable brand known for producing high-quality products that meet industry standards. Do some research on different brands and read reviews from other boat owners before making a purchase.

4. Budget: While it may be tempting to opt for cheaper options when purchasing gear oil, keep in mind that this could end up costing you more in the long run if it compromises your engine’s performance or causes damage.

Tips for Maintaining Your Outboard Motor with Proper Gear Oil

1.Frequent Inspections: Regularly check your outboard motor’s gear case for any signs of leaks or water intrusion as these can indicate problems with your gear oil.

2.Follow Manufacturer’s Recommendations: Always refer to your engine manual or consult with a professional mechanic before choosing a particular type or brand of gear oil for your specific outboard motor model.

3.Schedule Regular Oil Changes: Just like engine oil needs regular changes; so does gear oil in order maintain its effectiveness in protecting your gears.

4.Avoid Mixing Brands/Types: Mixing different brands or types of gear oils can result in chemical reactions that could affect their performance and potentially damage your engine.

In Conclusion

Investing in high-quality gear oil is crucial for maintaining optimal performance and prolonging the lifespan of your outboard motor. By considering factors such as viscosity, type of motor, brand reputation, budget and following proper maintenance practices with regular inspections and changes; you can ensure that you are giving your outboard motor the best care possible.

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Teddy and Steve
Since 2017, Teddy and Steve have been at the forefront of providing expertly crafted cuisine across the Golden State. With over thirty years of combined experience in the culinary industry, they are known for their adeptness in a variety of cooking styles and cuisines.

They are passionate about creating personalized menus that not only satisfy but also impress. Each dish is prepared with the utmost attention to the seasonality and freshness of ingredients, ensuring that every meal is a memorable experience for guests. Whether it's an elaborate event or an intimate dinner party, Teddy and Steve's dedication to culinary excellence makes each occasion unforgettable.

Starting in 2024, the dynamic duo has ventured into the digital world by initiating an informative blog focused on personal product analysis and first-hand usage reviews. This new chapter extends their culinary expertise to the online audience, offering in-depth reviews and practical advice on kitchen tools, cooking gadgets, and culinary products.