--- product_id: 10122912 title: "25W-40 4-Stroke Marine Engine Oil, 1 Gallon - 8M0078628" brand: "mercury" price: "19970 kr" currency: ISK in_stock: true reviews_count: 9 category: "Mercury" url: https://www.desertcart.is/products/10122912-25w-40-4-stroke-marine-engine-oil-1-gallon-8m0078628 store_origin: IS region: Iceland --- # 25W-40 Viscosity - optimal marine engine flow 400°F Flash Point - high thermal stability Superior wear & corrosion protection 25W-40 4-Stroke Marine Engine Oil, 1 Gallon - 8M0078628 **Brand:** mercury **Price:** 19970 kr **Availability:** ✅ In Stock ## Summary > ⚓ Power your marine adventures with oil engineered to outperform and outlast! ## Quick Answers - **What is this?** 25W-40 4-Stroke Marine Engine Oil, 1 Gallon - 8M0078628 by mercury - **How much does it cost?** 19970 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/10122912-25w-40-4-stroke-marine-engine-oil-1-gallon-8m0078628) ## Best For - mercury enthusiasts ## Why This Product - Trusted mercury brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Certified Excellence:** Exceeds all marine engine warranty specs and is FC-W & FC-W Catalyst Compatible for guaranteed reliability. - • **Trusted Legacy of Quality:** Backed by decades of Mercury Marine engineering expertise, delivering premium lubrication you can count on. - • **Viscosity That Stays Strong:** Maintains optimal thickness under pressure, ensuring smooth operation and peak efficiency from start to finish. - • **Engineered for Marine Mastery:** Specifically formulated for Mercury, MerCruiser & top 4-stroke marine engines to maximize performance on every voyage. - • **Unmatched Durability & Protection:** Industry-leading wear resistance and corrosion inhibitors extend engine life even in the harshest saltwater conditions. ## Overview Mercury 25W-40 4-Stroke Marine Engine Oil is a premium, 1-gallon lubricant designed for Mercury, MerCruiser, and other leading 4-stroke marine engines. It offers superior wear and corrosion protection, maintains viscosity under extreme conditions, and exceeds all marine industry standards including FC-W certification. Engineered by Mercury Marine, this oil ensures extended engine life and reliable performance in demanding marine environments. ## Description Marine engines operate in a harsh, corrosive environment that demands specialized protection you can't find in an automotive oil. Keep your engine operating at its peak with Mercury SAE 25W-40 4-Stroke Marine Engine Oil 8M0078628. In addition to superior strength and viscosity retention, it features a specialized additive package that helps prevent corrosion, on and off the water. This oil is recommended for use in all 4-stroke outboard, sterndrive and inboard engines, where 25W-40 is called for. It exceeds all marine industry requirements for 4-stroke oil and is certified FC-W and FC-W Catalyst Compatible. Review: good product - Reasonable price and came quick Review: Great for changing oil in my Mercury motor. - Just what I needed to change my oil in my outboard. ## Features - For use in Mercury, MerCruiser and other leading brands of four-stroke outboard, sterndrive and inboard marine engines - Provides outstanding wear and corrosion protection to help extend engine life - Industry-leading strength and viscosity retention - Exceeds all marine engine manufacturer warranty requirements and recommendations and is certified FC-W and FC-W Catalyst Compatible - Produced by Mercury Marine to our stringent original equipment manufacturer specifications - Mercury oils, lubricants and engine care products are backed by decades of experience in engineering, testing and manufacturing to provide the best protection and performance. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00GWV9NHW | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #66,114 in Automotive ( See Top 100 in Automotive ) #496 in Motor Oils | | Brand | MERCURY | | Brand Name | MERCURY | | Compatible with Vehicle Type | Marine Engines | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 305 Reviews | | Flash Point | 400 Degrees Fahrenheit | | Included Components | Engine Oil | | Item Weight | 1 Pounds | | Liquid Volume | 1 Gallons | | Manufacturer | Mercury Marine/Mercruiser | | Manufacturer Part Number | 8M0078628 | | Model Number | 8M0078628 | | Package Information | Bottle | | Size | 1 gallon | | UPC | 745061915664 | | Unit Count | 128 Fluid Ounces | | Vehicle Service Type | Marine Engines | | Viscosity Level | Medium to High | ## Product Details - **Brand:** MERCURY - **Flash Point:** 400 Degrees Fahrenheit - **Liquid Volume:** 1 Gallons - **Package Information:** Bottle - **Vehicle Service Type:** Marine Engines ## Images ![25W-40 4-Stroke Marine Engine Oil, 1 Gallon - 8M0078628 - Image 1](https://m.media-amazon.com/images/I/619UBB3cmhL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ good product *by K***R on May 22, 2024* Reasonable price and came quick ### ⭐⭐⭐⭐⭐ Great for changing oil in my Mercury motor. *by A***R on January 5, 2026* Just what I needed to change my oil in my outboard. ### ⭐⭐⭐⭐⭐ Mercury tough! *by S***T on February 11, 2024* Great oil for mercury pro xs 4 stroke motors ## Frequently Bought Together - Mercury Lubricants 4-Stroke - Gallon - MERCURY Marine Mercruiser Oil Filter 3.0L 4.3L V6 5.7 350 V8 35-866340K01 - Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz --- ## 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.is/products/10122912-25w-40-4-stroke-marine-engine-oil-1-gallon-8m0078628](https://www.desertcart.is/products/10122912-25w-40-4-stroke-marine-engine-oil-1-gallon-8m0078628) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-07-06*