18-9680-2

Sierra's 18-9680-2 Synthetic Marine Gear Lubricant is a high-performance, advanced formula lubricant specifically designed for use in marine applications. This premium lubricant is engineered to provide superior protection and extended equipment life for marine gearboxes, transmissions, and other heavy-duty marine applications.

The synthetic base oil of this lubricant offers superior resistance to oxidation and thermal breakdown compared to mineral oils. It also provides excellent flow properties in cold temperatures, ensuring proper lubrication during start-up and operation in various climate conditions.

The 18-9680-2 Synthetic Marine Gear Lubricant is formulated with a balanced additive system that provides excellent wear protection, corrosion resistance, and foam control. This helps prevent damaging wear on gears, bearings, and other components, while also ensuring that the lubricant maintains a consistent film thickness to prevent metal-to-metal contact.

This lubricant meets or exceeds the requirements of various marine industry standards, including API GL-5, MAN 33071, and ISO 680. Its compatibility with seawater and other marine environments ensures that it can effectively protect marine equipment in even the most demanding conditions.

The 18-9680-2 Synthetic Marine Gear Lubricant comes in a convenient 5-gallon pail size, making it an ideal choice for marine professionals and DIY boat owners who require high-quality lubrication for their marine equipment. Its long drain intervals and excellent performance ensure that it is a cost-effective and efficient solution for maintaining the health and longevity of marine gearboxes and transmissions.

In summary, Sierra's 18-9680-2 Synthetic Marine Gear Lubricant is a high-performance, advanced formula lubricant designed for use in marine applications. Its synthetic base oil, balanced additive system, and compatibility with seawater make it an excellent choice for protecting marine equipment and ensuring optimal performance in even the most demanding conditions.

Pros and Cons of Buying Sierra 18-9680-2 Synthetic Marine Gear Lubricant

Sierra 18-9680-2 Synthetic Marine Gear Lubricant is a popular choice for boat owners due to its high performance and advanced features. Let's explore the pros and cons of investing in this lubricant.

1. Superior Wear Protection: The synthetic formula of this lubricant provides excellent wear protection to marine gears, ensuring longer gear life and reduced maintenance.

2. High Viscosity: The high viscosity of this lubricant helps to reduce gear noise and vibration, providing a smoother and quieter operation.

3. Water Resistance: The lubricant is fully water-resistant, making it ideal for use in marine environments where water exposure is inevitable.

4. Temperature Range: It can withstand a wide temperature range, making it suitable for use in various marine applications.

5. Environmentally Friendly: This lubricant is biodegradable and contains no harmful additives, making it an eco-friendly choice for boat owners.

1. Cost: Sierra 18-9680-2 Synthetic Marine Gear Lubricant is more expensive than some other marine gear lubricants on the market.

2. Limited Availability: It may not be readily available at all marine supply stores, so boat owners may need to order it online or from specialty retailers.

3. Not Suitable for All Applications: While this lubricant is suitable for most marine applications, it may not be suitable for use in certain types of gearboxes or in extremely high-load situations.

Sierra 18-9680-2 Synthetic Marine Gear Lubricant is an excellent investment for boat owners who want to ensure the longevity and smooth operation of their marine gears. Its high-performance synthetic formula provides superior wear protection, water resistance, and temperature range, making it an ideal choice for marine applications. However, its cost and limited availability may be a consideration for some boat owners.

If you are a boat owner looking for a high-performance marine gear lubricant, Sierra 18-9680-2 Synthetic Marine Gear Lubricant is an excellent choice. Its advanced features and benefits make it worth the investment, especially if you want to reduce maintenance and ensure the longevity of your marine gears. However, be sure to check its availability and price at your local marine supply store or online retailers before making a purchase.

Details:

Pickup is not available. About Sierra, Sierra provides premium-quality aftermarket replacements for over 6,000 Marine parts, tools, and components. Sierra products are engineered to meet or exceed oem standards, and stand up in harsh Marine environments. Specifications, color: gold.

Sierra 18-9680-2 synthetic gear lubricant. Be sure to enter an accurate reason and for the return. This unique synthetic formulation is shear stable. Every country is different.

Items heading outside the USA cannot be used for military or government applications. Features, specifically formulated to optimize gear life by reducing friction. API GL-5/mil-l-210e. Provides superior wear protection in severe operating conditions.

Every new Sierra part comes with a limited lifetime warranty that covers the useful life of product against any defects in workmanship and materials. Describe the nature of problem and its urgency include pictures if possible. Resists oxidation to ensure high performance over a wide range of ambient operating temperatures. Warranty, defects, damage, and other problems: this item has a limited lifetime warranty covering any manufacturer defects.

Bottle size: 1 quart.

specifications inboardfuel:

• for models: Marine
• brand: Sierra
• mpn: 18-9680-2
• upc: 808282184377
• type: Gear Lubricant
• size: 1 Quart
• country of manufacture: United States
• item weight: 1.94 Lb

seller inboardfuel:

• # reviews: 41858
• rating: 100.0%
• city: everett, washington

payments inboardfuel:

• wallet: paypal
• credit card: visa
• other

offer inboardfuel:

• sold #: 12
• prices: $12.49–$168.00
• item condition: New
• started: january 8, 2026
• options: ship-to-home
• availability: in stock

general inboardfuel:

• category: Boat Parts > Inboard Engines Components > Intake Fuel Systems

returns inboardfuel:

• policy: returns accepted
• paid by: seller
• time: 60 days

shipping inboardfuel:

• type: fixed
• service: standard
• class: standard
• transit: 4-7 days

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