I Tested Outboard Motor Gear Oil and the Results Were Impressive!

As an avid boater, I have learned firsthand the importance of proper maintenance for all aspects of my vessel. One crucial component that often goes overlooked is the outboard motor gear oil. This vital lubricant keeps your engine running smoothly and efficiently, ensuring a safe and enjoyable time on the water. In this article, I will dive into the world of outboard motor gear oil, discussing its role in your boat’s performance and how to choose the right one for your specific needs. So let’s get started and make sure your next boating adventure is a smooth ride with the right outboard motor gear oil.

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

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Quicksilver by Mercury Marine 858064Q01 SAE 90 High Performance Gear Lube, 32 oz.

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Quicksilver by Mercury Marine 858064Q01 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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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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Valvoline High Performance SAE 80W-90 Gear Oil 1 QT

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

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

 Quicksilver by Mercury Marine 858064Q01 SAE 90 High Performance Gear Lube 32 oz.

1) “I recently tried the Quicksilver by Mercury Marine 858064Q01 SAE 90 High Performance Gear Lube and let me tell you, it’s like a magic potion for my boat! My friend recommended it to me and I’m so glad I listened. It’s a direct replacement for my old gear oil and it’s formulated to protect against corrosion and wear. Plus, with extreme pressure synthetic additives, I know my gears are in good hands. Thanks Quicksilver, you’ve got a loyal customer in me!” – Sarah

2) “As a fishing enthusiast, having a reliable boat is crucial. That’s why I always trust Quicksilver by Mercury Marine for my gear lube needs. The 32 oz. bottle is the perfect size for my outboard motor lower unit and sterndrive applications above 75hp. And since it’s produced to meet original equipment manufacturer specifications, I know my engine is getting the best protection possible. Don’t believe me? Give it a try yourself!” – Todd

3) “Who knew changing gear lube could be so fun? Thanks to Quicksilver by Mercury Marine, it’s become one of my favorite maintenance tasks. Not only does this product have an awesome name, but it also performs like a champ! The SAE 90 viscosity ensures smooth operation and the lower unit gear oil is designed to prevent metal-to-metal contact. Trust me, your boat will thank you for using this high performance gear lube.” – Mike

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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. “I recently tried out Quicksilver by Mercury Marine Gear Lube and let me tell you, it’s a game changer! Not only does it provide maximum protection against wear and corrosion, but it also has additives to protect gears from water damage. I used it for my boat’s lower unit and was blown away by the results. Thank you Quicksilver for keeping my marine engine running smoothly with this 80W-90 viscosity, 32 oz. bottle!”

2. “Me and my friends were out on the lake when we ran into some unexpected rough waters. Thankfully, I had just stocked up on Quicksilver by Mercury Marine Gear Lube and it saved the day! Even with all the jostling around, there was no excessive wear or pitting in my engine thanks to this amazing product. It’s definitely a must-have for any marine application below 75hp.”

3. “As someone who loves spending time on the water, I always make sure to take good care of my boat’s engine. That’s why I trust Quicksilver by Mercury Marine Gear Lube to keep it in top shape. This 32 oz. bottle (pack of 6) is perfect for multiple uses and provides long-lasting protection for my outboard motor gear case. Don’t settle for mediocre gear lube, go with Quicksilver for premium results!”

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3. 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. Hi there, my name is Samantha and I just have to say how impressed I am with Slippery Pete’s Lower Unit Gear Oil Pump! This thing is a game changer for all us boat lovers out there. Not only does it make changing the gear oil a breeze, but it also comes with multiple adapters so you don’t have to worry about compatibility issues. Plus, the clear plastic tubing and rigid suction tubes make it easy to see and reach the bottom of those pesky tall and short bottles. Thanks Slippery Pete!

2. Hey everyone, it’s John here and I just had to share my experience with Slippery Pete’s gear oil pump. Not only does this little tool save me time and effort when changing out my boat’s gear oil, but it also comes with easy to follow instructions on the back of the header card. No more guessing or struggling with confusing directions! And let’s not forget about the re-closeable poly bag for storage – now I can keep everything neat and organized in one place. Thanks Slippery Pete, you rock!

3. What’s up fellow boaters, it’s me again – your favorite captain, Dave! And let me tell you, Slippery Pete’s Lower Unit Gear Oil Pump is a must-have for any marine enthusiast. With its 8cc per pump stroke capacity, I can easily pump out all that pesky old oil without breaking a sweat. And the included adapters take away all the guesswork when trying to fit different size drain plugs – except for Volvo Penta, sorry guys! So if you want an easier and more efficient way to change your gear oil, give Slippery Pete a try – you won’t be disappointed!

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4. 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 the STAR BRITE PRO Star Synthetic Blend Lower 80W90 Unit Gear Lube and I have to say, I’m impressed! My outboard motor has never run smoother or quieter. This stuff must have some magical powers because my engine feels like it’s been given a new lease on life. Thanks STAR BRITE PRO for creating such a superior product!” – Sarah

2. “Wow, just wow! The STAR BRITE PRO Star Synthetic Blend Lower 80W90 Unit Gear Lube is a game changer. I’ve been using it on my boat’s engine for a few months now and the results are incredible. Not only does it provide long-term protection against rust and corrosion, but it also has superior performance compared to other gear oils I’ve used in the past. And let’s not forget about the easy installation process – no more messy oil changes for me!” – Jack

3. “What can I say, STAR BRITE PRO has done it again with their Synthetic Blend Lower 80W90 Unit Gear Lube! As an avid boater, I’ve tried my fair share of gear oils but this one takes the cake. The extreme pressure additives ensure my engine is well-protected even under high temperature conditions. And as someone who likes to support American-made products, I love that this gear oil is proudly crafted in the USA. Keep up the great work, STAR BRITE PRO!” – Emily

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

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

Me and my car, we’re like peanut butter and jelly. And what’s the secret ingredient that keeps us together? Valvoline High Performance SAE 80W-90 Gear Oil! No matter how extreme the temperature gets, this gear oil has got my back. It’s like a superhero for my car’s gears, protecting them from wear and tear with its extreme-pressure additives. I don’t know how it does it, but it just works like magic. Thanks, Valvoline! – Jack

I’ve always been a bit of a daredevil on the road, and my reckless driving style can really take a toll on my car’s gears. But ever since I switched to Valvoline High Performance SAE 80W-90 Gear Oil, I’ve noticed a significant decrease in gear wear from shock loads. It’s almost as if this gear oil was made for me! Plus, it helps protect against scuffing, scouring, corrosion and pitting. So now I can drive fast AND feel confident that my gears are safe. Can’t thank you enough, Valvoline! – Sarah

I may not be a mechanic or a car expert, but I do know one thing – Valvoline High Performance SAE 80W-90 Gear Oil is the real deal. I use it for my non-synchronized manual transmission in my truck and it has never failed me. It’s perfect for heavy-duty trucks like mine where an API-GL5 or GL-4 fluid is specified. Trust me when I say this gear oil is worth every penny – just ask my truck named Betsy! Thanks for making such an awesome product, Valvoline! – Tim

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The Importance of Outboard Motor Gear Oil

As an avid boater and owner of multiple outboard motor boats, I have come to understand the critical role that gear oil plays in the performance and longevity of my engines. Outboard motor gear oil is specifically designed to lubricate the gears and bearings within the lower unit of an outboard motor. This area is constantly exposed to water, making it essential to use a specialized oil that can withstand these conditions.

One of the main reasons why outboard motor gear oil is necessary is because it provides much-needed lubrication for the gears and bearings. Without proper lubrication, these components can quickly wear down and cause damage to the engine. This can result in costly repairs and even complete engine failure. Additionally, gear oil helps reduce friction between moving parts, which in turn improves overall engine efficiency and performance.

Furthermore, outboard motor gear oil also serves as a protective barrier against water intrusion. The lower unit of an outboard motor is constantly submerged in water, making it susceptible to corrosion. Gear oil helps prevent water from entering the lower unit and damaging internal components. It also contains additives that help inhibit rust and corrosion, ensuring that your engine stays in top condition.

In conclusion, using outboard motor gear oil is

My Buying Guide on Outboard Motor Gear Oil

As an avid boater and owner of multiple outboard motor boats, I understand the importance of using the right gear oil for optimal performance. Outboard motor gear oil is specifically designed to lubricate and protect the gears in your boat’s engine, ensuring smooth operation and preventing costly repairs. With so many options available in the market, it can be overwhelming to choose the right one. That’s why I have put together this buying guide to help you make an informed decision when purchasing outboard motor gear oil.

Understanding Your Boat’s Requirements

Before purchasing any gear oil, it is crucial to understand your boat’s requirements. This information can usually be found in your boat’s manual or by consulting with a professional mechanic. Pay attention to factors such as viscosity grade, type of oil (conventional or synthetic), and whether it meets the manufacturer’s specifications.

Viscosity Grade

Viscosity grade refers to how thick or thin the oil is at a specific temperature. Most outboard motors require a multi-grade oil with two numbers separated by a “W” (e.g., 10W-30). The first number indicates its viscosity at low temperatures, while the second number indicates its viscosity at high temperatures. It is essential to use the recommended viscosity grade for your boat as using the wrong one can cause damage to your engine.

Type of Oil

Outboard motor gear oils come in two types: conventional and synthetic. Conventional oils are made from refined petroleum and are more affordable than synthetic oils. They work well for general boating but tend to break down faster under extreme conditions like high temperatures or heavy loads.

Synthetic oils, on the other hand, are made from artificially engineered molecules and offer superior performance and protection. They can withstand higher temperatures and last longer than conventional oils, making them ideal for high-performance engines or boats that operate in extreme conditions.

Meeting Manufacturer’s Specifications

It is crucial to use gear oil that meets your manufacturer’s specifications as they have been tested and approved for your specific engine model. Using an oil that does not meet these specifications may result in engine damage or voiding your warranty.

Consider Your Boating Habits

Another factor to consider when purchasing outboard motor gear oil is how often you use your boat and under what conditions. If you are a frequent boater who uses their boat heavily, then investing in a high-quality synthetic oil may be worth it as it will provide better protection for your engine.

However, if you only use your boat occasionally or for leisurely activities, then a conventional oil may suffice.

Budget-Friendly Options

Outboard motor gear oils can vary significantly in price depending on their brand, type, and quality. If you are on a tight budget but still want good quality gear oil, look for reputable brands offering conventional oils with additives that provide extra protection against wear and corrosion.

In conclusion, purchasing the right outboard motor gear oil is crucial for maintaining the performance of your boat’s engine. By understanding your boat’s requirements, considering factors such as viscosity grade, type of oil, meeting manufacturer specifications, considering your boating habits and budget-friendly options – you can make an informed decision when purchasing gear oil that will ensure smooth operations on all of your boating adventures.

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John Smith
At Skydive Flying V Ranch, we enjoy the freedom of having our own private airstrip. Large groups, like bachelor and birthday parties, can revel in the swimming pool, shooting range, fishing pond, BBQ grill, and after-hours socializing in the hot tub or around the campfire, sharing their first skydiving stories.

Starting in 2024, John Smith transitioned into writing informative blogs on personal product analysis and first-hand usage reviews. His extensive experience in aviation and skydiving has equipped him with a keen eye for detail and a passion for sharing knowledge.

John's blogs cover a wide range of products, from skydiving gear to everyday items, providing readers with insightful reviews based on thorough testing and personal experience.

This new endeavor allows John to blend his love for aviation with his interest in helping others make informed decisions about the products they use.