MERCURY
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Mercury 25W-40 4-Stroke Marine Engine Oil, 1 Gallon - 8M0078628
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Mercury 25W-40 4-Stroke Marine Engine Oil, 1 Gallon - 8M0078628
Mercury's new 4-Stroke oil technology outperforms automotive oils in marine applications with its specialized additive package and designed for all 4-Stroke marine engines, providing flagship engine and corrosion protection.
Mercury 25W-40 4-Stroke Marine Engine Oil, 1 Gallon - 8M0078628
Item #: 15959396

Mercury 25W-40 4-Stroke Marine Engine Oil, 1 Gallon - 8M0078628

Item #: 15959396

BHD 24

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*All items will import from US

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Order now and get it around Wednesday, July 08
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Mercury's new 4-Stroke oil technology outperforms automotive oils in marine applications with its specialized additive package and designed for all 4-Stroke marine engines, providing flagship engine and corrosion protection.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

High Performance
Mercury Lubricants 4-Stroke delivers exceptional engine protection, enhancing performance and longevity for your marine equipment, ensuring a smooth sailing experience.
Versatile Use
Designed for various 4-stroke engines, this lubricant caters to a broad customer base, making it ideal for boat enthusiasts and professionals alike.
Environmentally Safe
With biodegradable properties, this lubricant minimizes environmental impact while maintaining high lubrication standards, appealing to eco-conscious users.

Product Details

Shop for genuine MERCURY 1 Gallon 4-Cycle Oil 25W40-8M0078628 online at Ubuy Bahrain. Get the best prices and fast delivery worldwide.
  • Genuine OEM Factory Original Equipment PN 92-8M0078628
  • Specially designed for use in all 4‑Stroke Marine Engines
  • Exceeds all Marine industry 4‑Stroke oil requirements including FC‑W and FC‑W Catalyst Compatible
  • Provides flagship engine and corrosion protection
  • Developed by the largest marine engine manufacturer in the world
  • Recommended 25W40 for use in all Marine Engines
Item Weight8.5 lbs (3.86 kg)

Who Should Buy?

Suitable For
  • Boating Enthusiasts

    Ideal for boat owners looking for reliable performance in 4-stroke engines, maintaining optimal efficiency and longevity.

  • Marine Professionals

    Well-suited for marine mechanics and professionals needing a high-quality lubricant for regular maintenance of 4-stroke engines.

  • Recreational Users

    Perfect for recreational boaters who demand smooth operation and increased engine protection during weekend outings.

Not Suitable For
  • Two-Stroke Engines

    This lubricant is not designed for two-stroke engines and may cause performance issues or engine damage.

  • Infrequent Users

    Occasional users may find this product excessive as it could degrade over time if not used regularly.

  • Budget Buyers

    Cost-conscious customers may prefer cheaper alternatives, as this product is positioned in the premium price range.

Product Description

Mercury 25W-40 4-Stroke Marine Engine Oil, 1 Gallon - 8M0078628

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the primary application for Mercury Lubricants 4-Stroke?

    Answer: Mercury Lubricants 4-Stroke is formulated for use in 4-stroke engines, commonly found in boats, motorcycles, and ATVs. This lubricant ensures optimum engine performance by reducing wear, enhancing fuel efficiency, and minimizing emissions. Whether you're preparing your boat for a weekend outing or maintaining your motorcycle for daily rides, this oil is designed to protect against corrosion and sludge buildup, providing peace of mind and longevity for your engine.
  • Question: Is Mercury Lubricants 4-Stroke compatible with all 4-stroke engines?

    Answer: While Mercury Lubricants 4-Stroke is suitable for a wide range of 4-stroke engines, it is essential to check your engine manufacturer’s specifications first. This lubricant is particularly tailored for marine environments but can also be an excellent choice for other applications. Using the right oil is vital to ensure optimal lubrication and performance, so always consult your engine’s manual before making a switch.
  • Question: How often should I change the oil when using Mercury Lubricants 4-Stroke?

    Answer: For best results, it is generally recommended to change the oil every 100 hours of operation or at least once a year, whichever comes first. Frequent oil changes are crucial to maintaining engine health, as it helps remove contaminants and ensures consistent lubrication. If you frequently operate in harsh conditions (high heat, lots of dust, etc.), you may want to consider changing the oil even more often to ensure maximum protection.
  • Question: What are the benefits of using Mercury Lubricants 4-Stroke compared to other brands?

    Answer: Mercury Lubricants 4-Stroke offers superior protection against wear and corrosion, which is essential for marine engines exposed to challenging conditions. Its unique formulation facilitates better fuel economy and reduces engine deposits, ensuring a smoother performance. Additionally, this oil is created by a reputable brand known in the boating industry. Choosing a trusted product like Mercury not only supports engine longevity but also enhances overall user experience on the water.
  • Question: Can I use Mercury Lubricants 4-Stroke in winter conditions?

    Answer: Yes, Mercury Lubricants 4-Stroke is designed to perform well across various temperatures, including colder climates. Its formulation offers excellent cold-start protection, reducing potential engine wear during winter use. However, using an oil designed for winter conditions can provide extra assurance. With proper maintenance and timely oil changes, your engine can withstand cold conditions while maintaining performance.
  • Question: What are the storage instructions for Mercury Lubricants 4-Stroke?

    Answer: To ensure the best performance, store Mercury Lubricants 4-Stroke in a cool, dry place, away from direct sunlight and heat sources. Ensure that the container is tightly sealed to prevent contamination. Proper storage extends the product’s lifespan and performance. If kept under optimal conditions, the oil can remain effective for a prolonged period, ready for use when you need it.
  • Question: What should I do if I accidentally mix different oils?

    Answer: If you accidentally mix Mercury Lubricants 4-Stroke with different oils, it is crucial to perform an oil change as soon as possible. Mixing oils can alter their performance characteristics, preventing optimal lubrication and potentially leading to engine damage. Always consult your engine's service manual for recommendations and consider flushing the engine to eliminate mixed products thoroughly.
  • Question: Are there any warranty implications when using Mercury Lubricants 4-Stroke?

    Answer: Using Mercury Lubricants 4-Stroke generally supports your engine warranty, provided that it meets the manufacturer's specifications. It's crucial to confirm that your engine's manual endorses this lubricant. Using quality oil, such as Mercury’s, not only aligns with warranty requirements but also assures that your engine receives top-tier protection, contributing to its longevity and reliability.
  • Question: Can I use Mercury Lubricants 4-Stroke for high-performance engines?

    Answer: Yes, Mercury Lubricants 4-Stroke can be used in high-performance engines, thanks to its robust formulation that offers superior protection under intense conditions. Many enthusiasts rely on this oil for performance applications due to its ability to withstand high temperatures and pressures. If you’re using your engine in competitive scenarios or rigorous conditions, opting for quality lubricants like Mercury can be the difference between failure and prolonged success.
  • Question: Where can I buy Mercury Lubricants 4-Stroke - Gallon in Bahrain?

    Answer: You can purchase Mercury Lubricants 4-Stroke - Gallon on Ubuy, which offers a convenient and reliable online shopping experience for Canadians. Ubuy provides a wide selection of automotive products, including boat oils, ensuring you can find what you need with just a few clicks. With fast delivery options and an easy return policy, Ubuy is a great choice for purchasing your Mercury Lubricants.

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“Excellent quality and very fast delivery, I really appreciate your service, when you work good I will appreciate that, I am very satisfied, thank you”

13 June 2026 · via Trustpilot
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“The order arrived fast and in perfect condition”

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“Firstly the team who are very positive in response to any correction if something wrong. Secondly the quality and selection is exactly on what I ordered and which is perfect. Finally the time of delivery is very sufficient which made me comfortable. Overall is excellent.”

26 Feb 2026 · via Trustpilot
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“Good quality of product, delivered in 2 weeks. I thought it would take more time.”

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“Everything was fine. You can order from multiple stores or countries—just be patient with the shipping. Given their business model, this was my first order from them. Thank you, Ubuy.”

20 Feb 2026 · via Trustpilot
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BHD 24

Order now and get it around Wednesday, July 08

QTY:

Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

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Fastest cross-border delivery

Features & Benefits

  • Specialized additive package for marine engines
  • Exceeds all marine industry 4-Stroke oil requirements
  • Recommended for all 4-Stroke marine engines
  • Ultimate corrosion and wear protection
  • 25W40 recommended for all marine engines
  • Gallon bottle size