---
product_id: 529798376
title: "4-Stroke Marine Full Synthetic Engine Oil 1 Gallon"
brand: "valvoline"
price: "¥25975"
currency: JPY
in_stock: true
reviews_count: 8
category: "Valvoline"
url: https://www.desertcart.jp/products/529798376-4-stroke-marine-full-synthetic-engine-oil-1-gallon
store_origin: JP
region: Japan
---

# 50% stronger wear protection 8X better rust defense American made, 150+ years trusted 4-Stroke Marine Full Synthetic Engine Oil 1 Gallon

**Brand:** valvoline
**Price:** ¥25975
**Availability:** ✅ In Stock

## Summary

> ⚓ Power your marine adventures with the ultimate synthetic shield!

## Quick Answers

- **What is this?** 4-Stroke Marine Full Synthetic Engine Oil 1 Gallon by valvoline
- **How much does it cost?** ¥25975 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/529798376-4-stroke-marine-full-synthetic-engine-oil-1-gallon)

## Best For

- valvoline enthusiasts

## Why This Product

- Trusted valvoline brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Heritage You Can Trust:** Formulated by Valvoline, the original motor oil brand with over 150 years of expertise.
- • **Rust? Not on Our Watch:** 8X better rust defense shields your engine from moisture damage, whether running or stored.
- • **Tailored for Marine Power:** Specifically engineered for the extreme RPM and heat demands of 4-stroke marine engines.
- • **Pure Synthetic Performance:** Premium full synthetic formula delivers peak horsepower without compromise.
- • **Unmatched Engine Longevity:** 50% stronger wear protection keeps your marine motor running smoother, longer.

## Overview

Valvoline 4-Stroke Marine Full Synthetic Engine Oil (1 Gallon) is a premium 10W-30 synthetic oil designed specifically for 4-stroke marine engines. It offers 50% stronger wear protection and 8X better rust defense to withstand extreme heat, high RPMs, and moisture exposure. Proudly American made by a trusted brand with over 150 years of motor oil innovation, this oil ensures durability, peak performance, and extended engine life for all your marine vessels.

## Description

Inboard? Outboard? Whatever floats your boat, Valvoline Full Synthetic 4-Stroke 10W-30 Marine Motor Oil is proven to maximize engine life. Unlike automobile engines, four-stroke marine motors face unique challenges from higher running speeds, seasonal use, and extreme operating environments that can lead to corrosion, excessive wear, and dirt deposits. Valvoline Full Synthetic 4-Stroke Marine Oil is optimized for performance and durability, providing 50% stronger wear protection and 8X better defense against rust than industry standards. All without compromising acceleration and horsepower. For peak performance, make sure your motor has the superior protection it demands. Full Synthetic 4-Stroke Marine Motor Oil from Valvoline – the trusted motor oil brand for more than 150 years.

Review: Good stuff, fair price. - Great full synthetic marine oil at a very fair price.
Review: works perfect - i bought to maintain mowers

## Features

- 50% stronger wear protection to meet the extreme heat and higher RPM demands of 4-stroke marine engines
- Up to 8X better rust defense. Running or stored, your marine engine takes in moisture. Left unprotected this exposure can lead to severe rust damage
- Engineered specifically for the unique demands of marine motors
- Premium full synthetic formula for performance and durability in extreme conditions
- American made and formulated, from the Original Motor Oil brand trusted for more than 150 years

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C1LKVSD4 |
| Best Sellers Rank | #37,903 in Automotive ( See Top 100 in Automotive ) #331 in Motor Oils |
| Brand | Valvoline |
| Brand Name | Valvoline |
| Compatible with Vehicle Type | Water Scooter |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 777 Reviews |
| Flash Point | 390 Degrees Fahrenheit |
| Included Components | Engine Oil |
| Item Height | 10.9 inches |
| Item Type Name | Engine Oil |
| Liquid Volume | 1 Gallons |
| Manufacturer | Valvoline |
| Manufacturer Part Number | 899591-EA |
| Package Information | Bottle |
| UPC | 074130069145 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Water Scooter |
| Viscosity | 10W 30 SAE Grade |

## Product Details

- **Viscosity:** 10W 30 SAE Grade
- **Brand:** Valvoline
- **Liquid Volume:** 1 Gallons
- **Package Information:** Bottle
- **Vehicle Service Type:** Water Scooter

## Images

![4-Stroke Marine Full Synthetic Engine Oil 1 Gallon - Image 1](https://m.media-amazon.com/images/I/61z7QOthtNL.jpg)

## Available Options

This product comes in different **Configuration, Size** options.

## Questions & Answers

**Q: Anyone running it a jetski any difference  (yamaha gp800)**
A: i used it for a scooter 2 stroke and it was working perfect.now for a jet ski i don't know if its a 2 stroke it will work...

**Q: Is this a synthetic blend?**
A: It literally says synthetic blend on the bottle. Yes, it is synthetic blend. Run in a 1999 Polaris Genesis. Perfect oil and good price.

**Q: Can this product be used with chainsaws?**
A: This is a gas mix for 2-cycle engines. If your chainsaw is a 2-cycle engine and your looking for a fuel mix, that's what this is for then, yes.

**Q: Can i run valvoline outboard in a weed eater 50:1?**
A: Thank you for your interest in our products and your question!  Yes, all of our Valvoline 2-Stroke Motor Oil products are suitable to use in your application, provided the product is mixed at the proper ratio recommended by the engine manufacturer.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good stuff, fair price.
*by K***Y on December 12, 2025*

Great full synthetic marine oil at a very fair price.

### ⭐⭐⭐⭐⭐ works perfect
*by T***8 on December 28, 2025*

i bought to maintain mowers

### ⭐⭐⭐⭐⭐ Use the best oil to protect your investment
*by P***T on September 30, 2025*

Great product.

## Frequently Bought Together

- Valvoline 4-Stroke Marine Full Synthetic Engine Oil 1 GA
- Valvoline 4-Stroke Marine Full Synthetic Engine Oil 1 QT
- Quicksilver by Mercury Marine 8M0162830 Oil Filter for Mercury and Mariner 4-Stroke Outboards 25-115hp

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**Shop now:** [https://www.desertcart.jp/products/529798376-4-stroke-marine-full-synthetic-engine-oil-1-gallon](https://www.desertcart.jp/products/529798376-4-stroke-marine-full-synthetic-engine-oil-1-gallon)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-04*