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Quicksilver by Mercury Marine 25W-40 Marine Engine Oil

4.8 4.8 out of 5 stars 3,536 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Motor Oils by Quicksilver
$42.96 with 6 percent savings $0.34 per Fl Oz
List Price: $45.51

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Mineral
Gallon
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Purchase options and add-ons

Viscosity 25w-40
Brand Quicksilver
Manufacturer Quicksilver
Liquid Volume
128 Fluid Ounces
Package Information
Bottle

About this item

  • Direct replacement for Mercury Marine 8M0078628
  • Designed for use in 4-stroke marine engines
  • Formulated to provide superior corrosion resistance and wear protection to maintain peak engine performance and reliability
  • Special viscosity modifiers help to optimize the performance of high-rpm 4-stroke outboard motors
  • 25W-40 viscosity
  • Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your outboard
  • Manufacturer part number 8M0078620
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Quicksilver by Mercury Marine 25W-40 Marine Engine Oil
$42.96 ($0.34/Fl Oz)
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From the manufacturer

Quicksilver 25W-40 Marine Engine Oil

Premium Quicksilver performance

Quicksilver 25W-40 Marine Engine Oil

Peace of mine on the water

Performance

Help keep your marine engine performing at its peak with premium Quicksilver 4-Stroke Marine Engine Oil. All Quicksilver oils exceed industry standards for shear resistance and corrosion prevention, providing superior lubricity and defense against wear. With the choice of mineral, synthetic blend and full-synthetic formulas in many of the most popular grades, you can select the level of performance that’s right for your engine.

Protection

You demand a lot from your marine engine. Protect it with premium Quicksilver 4-Stroke Marine Engine Oil. Unlike automotive oils, our oils are specially formulated to withstand the harsh conditions of marine environments. A specialized additive package includes advanced corrosion inhibitors to help protect internal engine parts when operating in damp conditions, as well as during intermittent use and off-season storage. They’re safe for use in marine engines from all leading brands when the proper grade is selected.

Peace of Mind

The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine Original Equipment replacement engine parts, oils, and accessories, but also works to serve all Original Equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures.

Quicksilver 25W-40 Synthetic Blend Marine Engine Oil Gallon Quicksilver 25W-40 Synthetic Blend Marine Engine Oil Quart Quicksilver 25W-40 Marine Engine Oil Gallon Quicksilver 25W-40 Marine Engine Oil Quart
Quicksilver 25W-40 Synthetic Blend - Gallon Quicksilver 25W-40 Synthetic Blend - Quart Quicksilver 25W-40 - Gallon Quicksilver 25W-40 - Quart
Customer Reviews
4.8 out of 5 stars
3,536
4.8 out of 5 stars
3,536
4.8 out of 5 stars
3,536
4.7 out of 5 stars
246
Price $55.22 $18.27 $42.96 $19.08
Blend Synthetic Blend Synthetic Blend Mineral Mineral
Part # 8M0078623 8M0078622 8M0078620 8M0078619
Quicksilver Brand Promise

Product information

Technical Details

Additional Information

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Quicksilver by Mercury Marine 25W-40 Marine Engine Oil

Quicksilver by Mercury Marine 25W-40 Marine Engine Oil

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Customer reviews

4.8 out of 5 stars
4.8 out of 5
3,536 global ratings

Customers say

Customers like the performance, value, and quality of the auto oil. They mention that it works well, is good value, is outstanding, and is the best marine oil.

AI-generated from the text of customer reviews

42 customers mention42 positive0 negative

Customers are satisfied with the quality of the auto oil. They mention that it is an outstanding marine oil, and the best for their outboard. Some say that it does the job well, and is recommended for mercruiser engines.

"Factory oil that provides confidence that you are giving the engine what it needs to run efficiently." Read more

"...Last but not least, synthetic oils offer more superior lubrication, so your engine will actually run cooler on a synthetic blend vs a straight..." Read more

"The best marine oil for my outboard and have no complaints ever . highly recommended and bulletproof oil" Read more

"I think it simply the best oil for my outboard. A bit higher priced but do you really want to run Dollar General oil in your bass boat?" Read more

32 customers mention29 positive3 negative

Customers appreciate the value of the auto oil. They mention that it is a quality product at a good price.

"good price" Read more

"Real deal quicksilver oil. No issues" Read more

"Good price,Awesome product" Read more

"...Great to work with a small company with fair price, excellent service!Now I get to winterize this weekend......" Read more

17 customers mention17 positive0 negative

Customers are satisfied with the performance of the auto oil. They mention that it works well, has no issues, and runs perfect in Mercruiser engines. Some customers also appreciate the price and the delivery service.

"Real deal quicksilver oil. No issues" Read more

"Worked well, but I could have saved a little $$ and used 10W30 oil based on my region's temps...." Read more

"...Performs well." Read more

"Delivered to the door and no issues. Almost half the cost of buying at a local marine supply store! Worked great for my 6.2 Mercruiser Horizons!" Read more

Recommend Mercury Mercruiser Oil
5 Stars
Recommend Mercury Mercruiser Oil
Factory oil that provides confidence that you are giving the engine what it needs to run efficiently.
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Top reviews from the United States

DD
5.0 out of 5 stars Great oil for marine applications
Reviewed in the United States on March 28, 2024
Style: Synthetic blendPattern Name: GallonVerified Purchase
I use this in my Baja 26 Outlaw equipped with the 496 MAG HO. I change my oil & filter once per season regardless of hours, and always use this oil along with a quart of Lucas synthetic oil stabilizer. High RPM use and hot ambient temps break down oil quicker and this helps to keep the oil cleaner, longer and keeps oil pressure high.
One person found this helpful
Helpful
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Pappycrabber
5.0 out of 5 stars Great 4 stroke oil from trusted source
Reviewed in the United States on April 13, 2024
Style: MineralPattern Name: GallonVerified Purchase
Just what you need for your annual 4 stroke oil change.
Helpful
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Timothy Cox
5.0 out of 5 stars Synthetic blend
Reviewed in the United States on April 14, 2024
Style: Synthetic blendPattern Name: QuartVerified Purchase
Great for your Mercruiser big block motors.
Helpful
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Brian cantrell
5.0 out of 5 stars Fast shipping
Reviewed in the United States on April 10, 2024
Style: Synthetic blendPattern Name: QuartVerified Purchase
Great and fast shipping
One person found this helpful
Helpful
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Scott 😀
5.0 out of 5 stars Recommend Mercury Mercruiser Oil
Reviewed in the United States on March 31, 2024
Style: Synthetic blendPattern Name: GallonVerified Purchase
Factory oil that provides confidence that you are giving the engine what it needs to run efficiently.
Customer image
Scott 😀
5.0 out of 5 stars Recommend Mercury Mercruiser Oil
Reviewed in the United States on March 31, 2024
Factory oil that provides confidence that you are giving the engine what it needs to run efficiently.
Images in this review
Customer image Customer image
Customer imageCustomer image
One person found this helpful
Helpful
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Randy W
4.0 out of 5 stars Cheap good oil
Reviewed in the United States on October 7, 2023
Style: MineralPattern Name: GallonVerified Purchase
I like the price
One person found this helpful
Helpful
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Edgar O.
5.0 out of 5 stars Great oil
Reviewed in the United States on February 26, 2024
Style: MineralPattern Name: GallonVerified Purchase
Good for my mercury 75hp four stroke
One person found this helpful
Helpful
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ChrisWNY
5.0 out of 5 stars For sterndrives (Mercruiser 3.0 for example), the Synthetic Blend is your best option
Reviewed in the United States on September 6, 2023
Style: Synthetic blendPattern Name: GallonVerified Purchase
The 25W-40 Synthetic blend marine engine oil has been more difficult to come by in stores lately. If you're out on the water frequently, the Synthetic Blend will last longer and offer better performance than the mineral oil. Synthetic oils stick to metal parts better than mineral oils...they also offer better corrosion resistance and have higher flash points, meaning it will take higher temps to burn up synthetic oils compared to mineral. Last but not least, synthetic oils offer more superior lubrication, so your engine will actually run cooler on a synthetic blend vs a straight mineral oil. For $10 more the synthetic blend is well worth it to protect your engine.
4 people found this helpful
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Top reviews from other countries

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Primetime141
2.0 out of 5 stars 1 seule bouteille et non 3!
Reviewed in Canada on June 13, 2022
Style: MineralPattern Name: GallonVerified Purchase
Ça dit 3 bouteilles, mais en envoie seulement 1 seule. Par contre, leur service à la clientèle est rapide et courtois.
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Geo
1.0 out of 5 stars 25w-40 QuickSilver outboard oil
Reviewed in Canada on October 20, 2020
Style: Synthetic blendPattern Name: GallonVerified Purchase
Listed as 3-pack of 1 gallons
Only one received in damaged package???
One person found this helpful
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Christine Bax
2.0 out of 5 stars Not as described
Reviewed in Canada on November 10, 2020
Style: MineralPattern Name: GallonVerified Purchase
Product is marina oil, however not the quantity described. The description states1 gallon (pack of 3). I received 1 bottle not 3. Too expensive for what you receive.
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