You will find our hand-picked selection of Best Marine Gear Oil below. You have a wide variety of choices of brands such as Quicksilver,Lucas Oil,Triax,Bolaxin available to you as a result of the fact that each one of them has a unique pricing, look, and feel. Continue reading for an in-depth analysis in our Best Marine Gear Oil buying guide!
Our experts tested a variety of Best Marine Gear Oil on the market. Right at the top of the list is Quicksilver Best Marine Gear Oil. Check out some more of our favorites below, and read some valuable insight from our experienced editors.
Editor's Choice
Quicksilver SAE 90 High Performance Gear Lube for Outboards and Sterndrives, 32 oz
Premium Pick
Quicksilver SAE 90 High Performance Gear Lube and Pump Kit for Mercury Outboards and Mercruiser
Budget Pick
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 SAE 90 High Performance Gear Lube for Outboards and Sterndrives, 32 oz
- Lower unit gear oil formulated to protect against corrosion and excessive wear
- Designed for outboard motor lower unit and sterndrive applications above 75hp
- Extreme pressure synthetic additives protect gears from metal to metal contact
- SAE 90 viscosity
- Manufacturer part number 8M0222065
2. Quicksilver by Mercury Marine 80W-90 Premium Gear Lube, Marine Engine, 32 oz.
- 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
3. Lucas Oil 10652 Synthetic SAW 75W-90 M8 Marine Gear Oil - 1 Quart
- For best performance, follow the manufacturer's recommendations in your vehicle owners manual.
4. TRIAX Marine Gear SAE 90 Full Synthetic Oil | for All Stern Drives, Bow Thrusters, and Lower Gear
- FULLY CORROSION INHIBITED: For both salt and freshwater use; prevents rust and corrosion on transmission components; protects brass, copper, and aluminum alloys
- WIDELY COMPATIBLE: Compatible with all lower gear units / sterndrives on all JetSkis, Jet Pumps, and Sports Jets made by Mercury / Mariner, Johnson / Evinrude, Bombardier, Honda, Yamaha, Suzuki, Force / US Marine, Nissan, Tohatsuand Harbormaster; Sterndrives made by Mercruiser-Bravo, OMC / Bombardier, Volvo-Penta, Yanmar, Konrad, and Marine Drive Systems; V-drives made by Casale & Menkins; bow thrusters made by Harbormaster Marine; and transmissions made by ZF Marine Transmission
- EXTREME OXIDATION STABILITY: Full synthetic formulation (unlike OEM fluids) provides exceptional thermal stability and oxidation inhibition even in high thermal and mechanical loads; IDEAL FOR STORAGE: long term stability protects
- FULL SEAL PROTECTION: Contains specialized additives to maintain seal pliability helping to maintain water tightness of gear units preventing water intake
- EXCELLENT FRICTIONAL PROPERTIES: Prevents gear slippage, sticking even with sudden high torque acceleration, towing or accidental over-revving (when the prop is outside of the water)
5. Quicksilver SAE 90 High Performance Gear Lube and Pump Kit for Mercury Outboards and Mercruiser
- Lower unit gear oil formulated to protect against corrosion and excessive wear
- Designed for outboard motor lower unit and sterndrive applications above 75hp
- Extreme pressure synthetic additives protect gears from metal to metal contact
- SAE 90 viscosity
- Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your engine
- Previous manufacturer part number 802891Q05
- Manufacturer part number 8M0222069
6. Bolaxin Lower Unit Gear Oil Pump for Standard Quart Bottles, 3/8 inch Metal Swivel, 8mm and 10mm
- Lower Unit Gear Oil Pump fits for Standard Quart Bottles. Fits for Most Marine Boat Outboard Motors (NOT fits for VOLVO PENTA).
- Fits for all standard 1 quart lower unit lube bottles. Perfect for most 32 ounce outboard gear oil bottles.
- Pump 8CC per pump stroke. Easily press down. Comes with 2 Rigid Suction Tubes to ensure the pump can reach the battom of tall and short bottles.
- 3 Adapters Sizes: 3/8" swivel adapter connected to clear plastic tubing. 8mm and 10mm metal adapter fits for most foriegn outboard motor's lower unit drain threads hole.
- Buy according to your needs, with different adapters, this lower unit gear oil pump change and refills the marine motor lower unit gear lube in a few minutes. Easily and quickly work.
- Packaged: 3*adapters, 2*tubes, 1*pump, 1*hose. Having any questions, please contact to us and got an ideal solution.
7. STAR BRITE Star Tron Hypoid 90W Lower Unit Gear Lube - Ultimate Marine Grade Lubricant for Outboard
- 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
8. Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel,
- 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
9. STAR BRITE Star Tron Synthetic Blend Lower 80W-90 Unit Gear Lube - Marine Grade, High Viscosity Gear
- LONG TERM PROTECTION - Ideal for all engines over 100 hp that require 80w 90w oil - provides exceptional long-term protection against rust and corrosion, extending your engine's lifespan
- SUPERIOR PERFORMANCE - High viscosity synthetic blend 80W-90 gear oil, meets all specs for API GL-5, API MT-1, SAE J2360, and Mack GO-J
- EXTREME PRESSURE ADDITIVES - Special additives ensure great thermal stability and anti-wear protection, even under high temperature conditions
- EASY INSTALLATION - Our gear oil comes with a detailed guide for flushing and filling; STAR BRITE offers a complete line of Lower Unit Quart Pumps, Lube Tubes, and Adaptors for hassle-free oil changes
- VERSATILE APPLICATION - Perfect upgrade for all brands of 80W90 lower unit gear oil and gear lube applications
- PROUDLY AMERICAN, TRUSTED GLOBALLY - Choose STAR BRITE for a leading name in marine, auto, RV, home, and outdoor products since 1973, all proudly crafted in the USA for superior quality and performance
10. Suzuki Marine 990A0-01E81-01Q ECSTAR Hypoid Gear Oil SAE 90
Peter
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