---
product_id: 172090350
title: "Quicksilver 25W-40 - Quart"
brand: "quicksilver"
price: "¥6648"
currency: JPY
in_stock: null
reviews_count: 8
category: "Quicksilver"
url: https://www.desertcart.jp/products/172090350-quicksilver-25w-40-quart
store_origin: JP
region: Japan
---

# 25W-40 viscosity for optimal engine flow Superior corrosion & wear protection Specifically engineered for 4-stroke marine engines Quicksilver 25W-40 - Quart

**Brand:** quicksilver
**Price:** ¥6648
**Availability:** ❌ Out of Stock

## Summary

> 🛥️ Power your marine adventures with Quicksilver – where performance meets peace of mind!

## Quick Answers

- **What is this?** Quicksilver 25W-40 - Quart by quicksilver
- **How much does it cost?** ¥6648 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/172090350-quicksilver-25w-40-quart)

## 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 Trusted Quality:** Direct replacement for Mercury Marine parts, ensuring perfect fit and factory-level reliability.
- • **High-RPM Optimization:** Viscosity modifiers tailored to maintain smooth performance even at high engine speeds.
- • **Proven Industry Leader:** Backed by 65+ years of marine expertise and 4,200+ glowing reviews—join the elite who trust Quicksilver.
- • **Marine-Grade Performance:** Formulated to exceed FC-W and catalyst compatibility standards for peak 4-stroke engine efficiency.
- • **Long-Lasting Engine Protection:** Advanced corrosion resistance extends engine life and reduces maintenance downtime.

## Overview

Quicksilver 25W-40 Quart is a premium marine engine oil designed for 4-stroke outboard and sterndrive engines. It meets Mercury Marine OEM specs and marine industry standards, delivering superior corrosion resistance, wear protection, and optimized viscosity for high-rpm performance. Trusted by professionals and backed by decades of marine expertise, it ensures reliable engine longevity and peak performance on the water.

## 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: Perfect for my application. - Works as advertised
Review: Good price - Work in my engine and good price

## Features

- Direct replacement for Mercury Marine 8M0078627
- 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 8M0078619

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00GLL13OY |
| Best Sellers Rank | #4,553 in Automotive ( See Top 100 in Automotive ) #78 in Motor Oils |
| Brand | Quicksilver |
| Brand Name | Quicksilver |
| Compatible with Vehicle Type | Water Scooter |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 4,242 Reviews |
| Global Trade Identification Number | 00745061915503 |
| Included Components | 7650 fishing-equipment |
| Item Height | 9.25 inches |
| Item Type Name | Mercury MERC8M0078619 4 Stroke |
| Item Weight | 12 Ounces |
| Liquid Volume | 1 Quarts |
| Manufacturer | Quicksilver |
| Manufacturer Part Number | 8M0078619 |
| Manufacturer Warranty Description | Warranty |
| Package Information | Bottle |
| UPC | 745061915503 |
| Unit Count | 32.0 Ounce |
| Vehicle Service Type | Water Scooter |
| Viscosity | 25w-40 |

## Product Details

- **Brand:** Quicksilver
- **Liquid Volume:** 1 Quarts
- **Package Information:** Bottle
- **Vehicle Service Type:** Water Scooter
- **Viscosity:** 25w-40

## Images

![Quicksilver 25W-40 - Quart - Image 1](https://m.media-amazon.com/images/I/61TAW4fNMrL.jpg)

## Available Options

This product comes in different **Pattern, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for my application.
*by T***C on December 12, 2025*

Works as advertised

### ⭐⭐⭐⭐⭐ Good price
*by P***S on November 27, 2025*

Work in my engine and good price

### ⭐⭐⭐⭐⭐ 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 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz

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**Shop now:** [https://www.desertcart.jp/products/172090350-quicksilver-25w-40-quart](https://www.desertcart.jp/products/172090350-quicksilver-25w-40-quart)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-06*