--- product_id: 18858215 title: "Quicksilver by Mercury Marine 25W-40 Marine Engine Oil" brand: "quicksilver" price: "$153.14" currency: USD in_stock: true reviews_count: 12 category: "Quicksilver" url: https://www.desertcart.us/products/18858215-quicksilver-by-mercury-marine-25w-40-marine-engine-oil store_origin: US region: United States of America --- # Specifically engineered for 4-stroke marine engines 25W-40 viscosity for optimal engine flow Superior corrosion & wear protection Quicksilver by Mercury Marine 25W-40 Marine Engine Oil **Brand:** quicksilver **Price:** $153.14 **Availability:** ✅ In Stock ## Summary > 🛥️ Power your marine adventures with Quicksilver — where performance meets protection! ## Quick Answers - **What is this?** Quicksilver by Mercury Marine 25W-40 Marine Engine Oil by quicksilver - **How much does it cost?** $153.14 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/18858215-quicksilver-by-mercury-marine-25w-40-marine-engine-oil) ## Best For - quicksilver enthusiasts ## Why This Product - Trusted quicksilver brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **OEM-Approved Reliability:** Meets Mercury Marine’s exacting specifications for guaranteed compatibility - • **Maximize Engine Longevity:** Reduces friction and wear to keep your marine engine running smoother, longer - • **Unmatched Corrosion Defense:** Advanced formula guards your engine against harsh saltwater damage - • **Trusted Legacy of Excellence:** Backed by 65+ years of Quicksilver’s marine industry leadership - • **Engineered for Peak Marine Performance:** Precision 25W-40 viscosity tailored for high-rpm 4-stroke outboards ## Overview Quicksilver by Mercury Marine 25W-40 Marine Engine Oil is a premium, OEM-approved lubricant designed specifically for 4-stroke marine engines. It delivers superior corrosion resistance and wear protection, optimized viscosity for high-rpm outboards, and meets all marine industry standards including FC-W. Trusted for over 65 years, it ensures peak engine performance and longevity in demanding marine environments. ## Description Clean oil is essential in reducing friction and preventing damage to internal components, providing many years of engine life. Engineered for sterndrive and outboard applications, this 25W-40 4-stroke marine engine oil has been extensively tested to ensure impressive protection against corrosion and wear. Exceeds all marine industry 4-stroke oil requirements including FC-W and FC-W catalyst compatible. 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. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance, protection and peace of mind. Review: It’s the neat - Great product Review: Will be buying more. - Great price on OEM oil ## Features - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00N6DF8SW | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #489 in Automotive ( See Top 100 in Automotive ) #14 in Motor Oils | | Brand | Quicksilver | | Brand Name | Quicksilver | | Compatible with Vehicle Type | Marine Vehicles | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 2,693 Reviews | | Global Trade Identification Number | 00745061915527 | | Included Components | End Product & Information | | Item Type Name | 25W-40 Oil | | Item Weight | 7 Pounds | | Liquid Volume | 128 Fluid Ounces | | Manufacturer | Quicksilver | | Manufacturer Part Number | 8M0078620 | | Model Number | 8M0078620 | | Package Information | Bottle | | Size | 1-Gallon | | UPC | 745061915787 745061915527 | | Unit Count | 128.0 Fluid Ounces | | Vehicle Service Type | Marine Vehicles | | Viscosity Level | Medium to High | ## Product Details - **Brand:** Quicksilver - **Liquid Volume:** 128 Fluid Ounces - **Package Information:** Bottle - **Vehicle Service Type:** Marine Vehicles - **Viscosity:** 25w-40 ## Images ![Quicksilver by Mercury Marine 25W-40 Marine Engine Oil - Image 1](https://m.media-amazon.com/images/I/61DkqhBDE5L.jpg) ![Quicksilver by Mercury Marine 25W-40 Marine Engine Oil - Image 2](https://m.media-amazon.com/images/I/71AUvBjIj9L.jpg) ![Quicksilver by Mercury Marine 25W-40 Marine Engine Oil - Image 3](https://m.media-amazon.com/images/I/81RjEuG1oQL.jpg) ![Quicksilver by Mercury Marine 25W-40 Marine Engine Oil - Image 4](https://m.media-amazon.com/images/I/61v1nPLCWVL.jpg) ## Available Options This product comes in different **Pattern, Size, Style** options. ## Questions & Answers **Q: is this oil full synthetic** A: This product is a mineral based oil. “ The NEW mineral 4-Stroke oil is also now approved for use in all outboard engines; previously only our syntetic blend could make this claim” Quicksilver makes a synthetic and it states synthetic on its lable. **Q: What's the difference between mercury oil** A: It is the same as Mercury oil. Quicksilver is the Mercury lubricant brand and has been for years. **Q: Is this for 01 bayliner Ccapri 4 cilinder** A: If it has mercruiser motor. **Q: How do I know if motor is 2 or 4 stroke? Basic Mercury 125 pontoon motor** A: Look on the engine and your book if you got one. It will tell you if 2 or 4 stroke ## Customer Reviews ### ⭐⭐⭐⭐⭐ It’s the neat *by R***K on February 10, 2026* Great product ### ⭐⭐⭐⭐⭐ Will be buying more. *by L***S on August 20, 2025* Great price on OEM oil ### ⭐⭐⭐⭐⭐ exact oil for my boat...specially made for boats *by P***F on February 3, 2025* I say that, because you might think that this is pricey for "regular" motor oil. It is not regular. This oil had additives in it that help suspend water. Why? well, the reason is that if you are out to sea, a long way from home, and you blow a head gasket, this oil will suspend and absorb water, and keep your engine lubed until you get back. Case in point...I had a leak in my intake manifold that filled my crankcase with water. When I checked the level, it was 3 quarts over full, and white soup. The water wasn't just sitting in the bottom of my oil pan, getting sucked up into my main bearings as water, and cooking all the internals. The engine ran just fine all the way home. This is why you use genuine boat parts! ## Frequently Bought Together - Quicksilver by Mercury Marine 25W-40 Marine Engine Oil - Quicksilver 866340Q03 Oil Filter for MerCruiser Sterndrive and Inboard Engines - Quicksilver 802893Q01 Water Separating Fuel Filter for Mercury and Mariner Outboards and MerCruiser Stern Drive and Inboard Engines --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/18858215-quicksilver-by-mercury-marine-25w-40-marine-engine-oil](https://www.desertcart.us/products/18858215-quicksilver-by-mercury-marine-25w-40-marine-engine-oil) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-14*