Best Marine Gear Oil

Peter | 24-09-2024

With so many Best Marine Gear Oil brands on the market – from big names like Quicksilver,Lucas Oil,MERCURY,Slippery Pete to smaller companies – finding the right product can be a real challenge. But we’re here to make your search easier.

We carefully researched and tested a vast range of Best Marine Gear Oil to help you discover the top contenders that match different needs and preferences. Altogether, we spent over 100 hours evaluating numerous products first-hand.

Our #1 best Best Marine Gear Oil is Quicksilver Best Marine Gear Oil, based on its stellar performance across all our tests. Below you’ll find more of our top-rated recommendations for great Best Marine Gear Oil options currently available. Make sure to check out our buying guide too – it’s full of expert advice for choosing a Best Marine Gear Oil tailored to exactly what you’re looking for. With our help guiding your decision, finding your perfect fit will be a breeze!

Editor's Choice
Valvoline High Performance SAE 80W-90 Gear Oil 1 QT
Valvoline High Performance SAE 80W-90 Gear Oil 1 QT
Premium Pick
Lucas Oil 10652 Synthetic SAW 75W-90 M8 Marine Gear Oil - 1 Quart
Lucas Oil 10652 Synthetic SAW 75W-90 M8 Marine Gear Oil - 1 Quart
Budget Pick
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.

Top 10 Best Marine Gear Oil

We researched and compared the top products in the Best Marine Gear Oil category to provide you with these recommendations.

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

Quicksilver 858064Q01 SAE 90 High Performance Gear Lube , 32 oz
7.7

Quicksilver

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  • Lower unit gear oil formulated to protect against corrosion and excessive wear
  • Designed for outboard motor lower unit and sterndrive applications above 75 HP
  • Extreme pressure synthetic additives protect gears from metal to metal contact
  • Extends gear life in extreme conditions including high-speed and high-horspower applications
  • SAE 90 viscosity
  • 1 quart bottle
  • Manufacturer part number 858064Q01

2. Lucas Oil 10652 Synthetic SAW 75W-90 M8 Marine Gear Oil - 1 Quart

Lucas Oil 10652 Synthetic SAW 75W-90 M8 Marine Gear Oil - 1 Quart
9.5

Lucas Oil

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  • For best performance, follow the manufacturer's recommendations in your vehicle owners manual.

3. 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.
9.1

Quicksilver

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  • Direct replacement for Mercury Marine 858058K01
  • Provides maximum protection against excessive wear, corrosion and pitting for extended gear life in marine applications
  • Contains additives to protect gears if water enters the gear case or lower unit
  • Recommended for use in outboard motor gear cases and marine lower units in applications below 75hp
  • 80W-90 viscosity
  • 32 oz. bottle (pack of 6)
  • Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your engine

4. OEM Mercury Marine Precision Premium SAE 80W90 Gear Lube 32oz.

OEM Mercury Marine Precision Premium SAE 80W90 Gear Lube 32oz.
8.9

Mercury

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5. Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel,

Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel,
8.7

Slippery Pete

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  • PUMPS 8CC PER PUMP STROKE (Includes Metal 3/8" Adapter Connected To Clear Plastic Tubing)
  • THIS GEAR OIL CHANGE KIT includes 3 adapter sizes. 3/8"(Swivel, Metal), 8mm and 10mm (Metal). Take the guess work out of figuring out the size of your Lower Unit's gear oil drain plug. (WON'T FIT VOLVO PENTA)
  • 2 Rigid Suction Tubes REACHES TO BOTTOM OF TALL AND SHORT GEAR OIL BOTTLES
  • Easy To Follow Instructions On Back Of Header Card
  • Re-closeable Poly Bag for Storage

6. 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
8.5

Mercury

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  • 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
  • Extreme pressure synthetic additives protect gears from metal to metal contact
  • Engineered to provide maximum protection for sterndrive and outboard lower units
  • For use in most gear housings of Mercruiser sterndrives and all Mercury, Mariner, and Force Outboards

7. Yamaha Original OEM Yamalube Acc-GEARL-UB-QT Marine Lower Unit Gearcase Lube Yamalube OEM - 1 Quart

  • Original Yamalube Yamaha OEM Marine Lower Unit Gearcase Lube ACC-GEARL-UB-QT
  • Includes: (1) Quart
  • Superior marine lubricant designed to protect gearcase components operating at high speeds for extended periods in fresh or saltwater applications, includes robust rust and corrosion inhibitors for long life.
  • This Yamalube Marine Gear Case Lube is intended for use in all outboards of 250 HP or less (excluding Yamaha 4.2L V6 outboards).
  • Made by Yamaha specifically for Yamaha

8. Lower Unit Gear Oil Pump: Transmission Fluid Transfer Extractor Kit Marine Boat Engine Motor

  • QUICK REFILL - This ideal refill lube tool offers a clean, efficient solution for do-it-yourself owners; its 8cc per stroke manual pump refills marine motor lower units swiftly, making outboard engine maintenance a breeze.
  • VERSATILE ADAPTERS - With the 3/8 in.-16 adapter, this oil pump kit fits OMC, Mercruiser, Evinrude, and more; the 8mm adapter suits Mercury (Japanese models), Yamaha, and others, making it a versatile marine motor extractor tool.
  • EXTENDED REACH - Equipped with an extra-long clear plastic hose, this manual tool guarantees easy access to hard-to-reach areas, enhancing the ease of transmission fluid transfers in both automotive and marine setups.
  • BOTTLE COMPATIBILITY - Reliable and designed for standard quart lower unit lube bottles, our pump fits most 32-ounce gear oil containers, ensuring you maximize the use of your bottles and prevent wastage (Note: NOT for RED LINE BOTTLE).
  • PRECISE FITMENT - This 8cc lower unit gear oil pump ensures quick, precise refills for marine motor lower units, perfect for Johnson/Evinrude, Mercury/Mariner, and more, streamlining the boat engine maintenance process.

9. STAR BRITE Hypoid 90W Lower Unit Gear Lube - Ultimate Marine Grade Lubricant for Outboard Motors &

STAR BRITE Hypoid 90W Lower Unit Gear Lube - Ultimate Marine Grade Lubricant for Outboard Motors &
7.9

Star Brite

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  • MAXIMUM MARINE PERFORMANCE - Specially formulated for outboard motors and stern drives, ensuring peak efficiency in marine conditions
  • ADVANCED PROTECTION - Features anti-wear additives and corrosion inhibitors, safeguarding against harsh marine elements
  • WIDE COMPATIBILITY - Ideal for use in major brands like Mercury, Mercruiser, Johnson, Evinrude, OMC, Force, Mariner, Nissan, Suzuki, Yamaha & Volvo, ensuring versatile application
  • PRECISELY ENGINEERED - Meets rigorous specs for API MT-1, GL-5, SAE J2360, MIL-L-2105E for trusted quality
  • RUST AND CORROSION INHIBITOR - Shields gear components from rust, prolonging their lifespan in marine environments
  • WARRANTY SAFE - Complies with engine manufacturer specifications, ensuring no voiding of warranties
  • EASY APPLICATION - Instructions included for effortless use with the recommended Star brite Lower Unit Quart Pump (027400)
  • PROUDLY AMERICAN, TRUSTED GLOBALLY - Star brite - Your choice for superior, USA-crafted marine, auto, and outdoor products since 1974

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

Valvoline High Performance SAE 80W-90 Gear Oil 1 QT
9.8

Valvoline

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  • Protects Against Severe Temperatures To Help Extend Service Life
  • Formulated With Extreme-Pressure Additives To Minimize Gear Wear From Shock Loads
  • Helps Protect Against Gear Wear From Scuffing, Scouring, Corrosion And Pitting
  • Recommended For Conventional Hypoid Differentials And Non-Synchronized Manual Transmissions In Passenger Cars, Light Trucks, Sport Utility Vehicles, Vans And Heavy-Duty Trucks Where An Api-Gl5 Or Gl-4 Fluid Is Specified

Peter

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