The 8 Best Gear Motor Oils (2022 reviews)

gear motor oils
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It is important to have the best gear motor oil. Let’s take you step by step, type by type, and find the best gear motor oil for you.

Our review process:

Our Top Picks:

Best Overall:
Buy: Yamaha Gear Motor Oil
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Best For Rear Differentials:
Buy: Valvoline Gear Motor Oil
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Best For Outboards:
Buy: Quicksilver Gear Motor Oil
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Best For Great Price:
Buy: Star Brite Gear Motor Oil
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Best For High Performance:
Buy: Mercury Marine/Mericruiser Gear Motor Oil
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Best For Peace Of Mind:
Buy: Lucas Oil Gear Motor Oil
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Best For Country Of Origin:
Buy: Crc Gear Motor Oil
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Best With Fastest Shipping:
Buy: Lubrimatic Gear Motor Oil
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Best Overall: Yamaha Gear Motor Oil

Yamaha Gear Motor Oil
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The Yamaha Gear Motor Oil's superior materials makes sure that it ages well with use. Also, it is made with fast shipping and it is great with great stuff. Make sure this fits by entering your model number. Finally, the yamaha gear motor oil is best for oil filling tube and it has use their oils.

Most buyers quickly discovered that the oil works well in yamaha outboard.s. And, a few also found that the oil will work for your lower unit. Therefore, buyers were eager to recommend it to friends and families.

Why We Like This:
  • Good investment for the long term.
  • One of the newcomers and featured product.

Best For Rear Differentials: Valvoline Gear Motor Oil

Valvoline Gear Motor Oil
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The Valvoline Gear Motor Oil's high-end materials makes sure that it ages well with use. The valvoline gear motor oil is affordable, it works well and it is for extreme pressure. 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. In addition, it protects against severe temperatures to help extend service life. Most importantly, the valvoline gear motor oil does its job and it is for rear differentials.

Almost all buyers quickly discovered that the oil is great for 2010 wrangler differentials. Moreover, a few say that the oil is easy to handle bottle. And, a few strongly agree that this lubricant is useful anywhere an api-gl5 or gl4 fluid is specified. With no doubts, this oil passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • This is used for gear boxes and rear ends on automobiles.
  • This is closest to what Toyota recommended for the highlander diff and transfer case.
  • This is a very good oil for the clock application.
  • This does damage to to the lower unit.

Best For Outboards: Quicksilver Gear Motor Oil

Quicksilver Gear Motor Oil
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The Quicksilver Gear Motor Oil's high-end materials makes sure that it ages well with use. The quicksilver gear motor oil is designed for outboard and sterndrive applications above 75 hp. Make sure this fits by entering your model number. In addition, it would be perfect with fast shipping and it is fully synthetic.

Above all, the quicksilver gear motor oil is great at a reasonable price and it is highly recommend.

Most customers quickly discovered that the oil is a superior lubricant,. quite sure one could run it for 2 years or more, but for a few bucks spent, it's worth the peace of mind. Moreover, a few strongly agree that the oil has additives to repel moisture and prevent corrosion in the gear box. In addition, a few also found that oil is the recommended lubricant for your lower unit sir.

Top Customer Quotes:
  • It is blue in color. It is synthetic.
  • This is perfect for big 4 - wheel toys.
  • This gear lube is fine for almost all outboards.
  • The oil in question is colored, you wo n't know which is which.

Best For Great Price: Star Brite Gear Motor Oil

Star Brite Gear Motor Oil
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If you often find yourself scrambling for convenient and suitable oil, Star Brite Gear Motor Oil is your end point. The star brite gear motor oil protects against rust and corrosion. Make sure this fits by entering your model number. These products exceed all engine manufacturers-feet specifications and are designed specifically for the marine environment. Lastly, the star brite gearmotor oil is fully synthetic and it is great at a nice price.

Most customers quickly discovered that the oil is a gear oil for an outdrive on a boat, not engine oil. And, a few strongly agree that the oil is an 80w90 lubricant, so it should be a good choice. Also, a few also found that note: if the oil is synthetic, which the label says it is, and the oil is viscosity is made for lower units, which the label says it is, then it should be good. Overall, at the price, they believe that they got a steal of a deal with it.

Top Customer Quotes:
  • Superior thermal stability protection over a wide temperature range.
  • High performance to meet the needs of high - powered marine engines.
  • This can be used on twin 300 outboards.
  • It is easy to replace old oil.

Best For High Performance: Mercury Marine/Mericruiser Gear Motor Oil

Mercury Marine/Mericruiser Gear Motor Oil
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Compared with other oil in this category, the Mercury Marine/Mericruiser Gear Motor Oil has a convenient design. The mercury marine/mericruiser gear motoroil is brand new, genuine mercury marine/mericruiser gear lube & pump. Make sure this fits by entering your model number. Moreover, the oil is great with fast shipping and it can ask for good quality. Most importantly, the mercury marine/mericruiser gear motor oil is a factory original equipment part, not aftermarket.

Almost all customers agree that the oil is on the hose fitting directly into the drive unit. Further, they also found that the oil was used for the low end of 2007 mercury 60hp 4 stroke. Moreover, a few say that the lube is pumped into the lower gear housing filler plug and pumped into and up to the open upper gear housing air vent. Overall, many customers have used the mercury marine/mericruiser gear motor oil for more than a few months without any complaints, and it shows no sign of giving up.

Top Customer Quotes:
  • This will work on "all mercury and mariner outboards except those of Japanese origin.
  • A gear lube pump and a quart of high performance gear lube are conveniently packaged together.
  • May be used with any sterndrive and outboard which uses a 3/8"-16 drain/fill screw.
  • Use the pump to replace your gear case oil with ease.

Best For Peace Of Mind: Lucas Oil Gear Motor Oil

Lucas Oil Gear Motor Oil
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We would, of course, be remiss if we didn't mention luca oil gearmotor oil for daily usage. The Lucas Oil Gear Motor Oil is full synthetic, is made with great stuff and it is for extreme pressure. Make sure this fits by entering your model number. In addition, this is for corrosion protection, is made for good stuff and it is effective. Most importantly, the lucas oil gear motoroil is designed for high - powered off shore racing boats, m8 marine gear oil contains seal conditioners and an exclusive blend of synthetic additives that protect from rust and wear caused by both fresh water and salt water during long periods of storage.

Most buyers agree that the oil comes with that type of cap. Further, they say that the oil is great oil in a standard oil container. And, a few also found that the oil is great price for a high quality oil.

Top Customer Quotes:
  • Fortified with anti-foaming agents to prevent cavitation at high rpm's.
  • Resists extreme pressure and reduces extreme friction.
  • Long - lasting with effective water resistance.
  • Safely blended with all other known gear oils and additives.

Best For Country Of Origin: Crc Gear Motor Oil

Crc Gear Motor Oil
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The Crc Gear Motor Oil's superior materials makes sure that it ages well with use. To shorten the package length of the product is 3 inches. In addition, the oil is for non-porous surfaces and it is perfect for machinery. In conclusion, with a 4.7 rating and more than 424 buyers, the crc gear motor oil stands as the best choice.

One customer says - "Brand new motor but replaced with new oil. ". Most buyers agree that the oil is well worth the wait.

Why We Like This:
  • The package height of the product is 9 inches.
  • New and hot releases.

Best With Fastest Shipping: Lubrimatic Gear Motor Oil

Lubrimatic Gear Motor Oil
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If you often find yourself scrambling for appropriate and satisfactory oil, Lubrimatic Gear Motor Oil should be your first option for buying. The lubrimatic gear motor oil will not void manufacturer warranties. Make sure this fits by entering your model number. Further, this is ideal for modern outboard and stern strive lower units.

Lastly, the lubrimatic gear motor oil has features for the lowest price and it is great with the fastest shipping.

One customer says - "Lower unit lube worked well. ". Most buyers opine that the oil offers a higher degree of protection but there are extra detergents which could or should be bounced against the mfg. Without any doubt, this product passed the test and had very satisfied buyers eager to share their experience.

Why We Like This:
  • This is made for stern drive units and it is good for country of origin.
  • meets or exceeds api-mt-1and gl-5 ratings.
  • Good brand reputation.