---
product_id: 5995797
title: "GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 5 Quarts"
brand: "castrol"
price: "₩135479"
currency: KRW
in_stock: true
reviews_count: 11
category: "Castrol"
url: https://www.desertcart.kr/products/5995797-gtx-high-mileage-10w-30-synthetic-blend-motor-oil-5
store_origin: KR
region: South Korea
---

# Improves fuel economy Phosphorus Replacement Tech for emission system longevity Superior engine wear protection GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 5 Quarts

**Brand:** castrol
**Price:** ₩135479
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your high-mileage engine young and unstoppable!

## Quick Answers

- **What is this?** GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 5 Quarts by castrol
- **How much does it cost?** ₩135479 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/5995797-gtx-high-mileage-10w-30-synthetic-blend-motor-oil-5)

## Best For

- castrol enthusiasts

## Why This Product

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

## Key Features

- • **Fuel Efficiency Boost:** Engineered to exceed industry standards, helping you get more miles per gallon without compromise.
- • **Seal the Deal on Leaks:** Advanced seal conditioners reduce leaks, saving you costly repairs and downtime.
- • **Fight Sludge Like a Pro:** Superior dispersancy technology actively combats sludge buildup, ensuring peak engine performance.
- • **Extend Your Engine’s Life:** Specially formulated for vehicles with 75,000+ miles to keep your ride running smoother, longer.
- • **Eco-Smart Emission Protection:** Phosphorus Replacement Technology safeguards your catalytic converter for cleaner, greener drives.

## Overview

Castrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil is a top-rated, advanced formula designed for vehicles with over 75,000 miles. Featuring Phosphorus Replacement Technology and superior dispersancy, it protects critical engine components, reduces leaks, fights sludge, and improves fuel economy—all while extending emission system life. Trusted by millions, it meets or exceeds API SP/SN PLUS and ILSAC GF-6 standards, making it the go-to choice for high-mileage vehicle care.

## Description

Castrol® GTX® High Mileage 10W-30 is the #1 consumer high-mileage brand, specially formulated for vehicles with over 75,000 miles. It's a synthetic blend motor oil that helps extend engine life providing Superior Protection in 7 Critical Areas including corrosion prevention, sludge control, timing and friction wear. It also contains a proprietary additive to protect the emisssion system. Our Phosphorus Replacement Technology reduces harmful phosphorus to protect the catalytic converter and help extend the life of your high mileage vehicle.

Review: Castrol high mileage oil - Works great. All of my vehicles are older so I use high mileage oil. The Castrol is a good choice.
Review: Fair price - Good quality product

## Features

- Phosphorus Replacement Technology helps extend emission system life
- Superior dispersancy that fights sludge build up
- Exceptional oil burn-off protection exceeding industry standards* | Seal conditioners to help reduce leaks
- Advanced additives that help prevent engine wear | Improved Fuel Economy**
- Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM | ILSAC GF-6 | * Based on API and ACEA volatility specifications ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00GSX43WE |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #2,733 in Automotive ( See Top 100 in Automotive ) #53 in Motor Oils |
| Brand | Castrol |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,227) |
| Date First Available | April 4, 2014 |
| Global Trade Identification Number | 00079191231104 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 9.43 pounds |
| Item model number | 03110 |
| Manufacturer | Castrol |
| Manufacturer Part Number | 03110C |
| Model | 03110 |
| Product Dimensions | 11.9 x 9.5 x 4.5 inches |
| SAE J300 Viscosity Grade | 10W-30 |
| Size | 5 Quarts |
| UPC | 079191231104 |
| Vehicle Service Type | For use in vehicles with over 75,000 miles, Passenger cars, trucks, and SUVs |
| Viscosity | 10W 30 SAE Grade |

## Product Details

- **Brand:** Castrol
- **Liquid Volume:** 160 Fluid Ounces
- **Package Information:** Bottle
- **Vehicle Service Type:** For use in vehicles with over 75,000 miles, Passenger cars, trucks, and SUVs
- **Viscosity:** 10W 30 SAE Grade

## Images

![GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 5 Quarts - Image 1](https://m.media-amazon.com/images/I/61-CIrwlB6L.jpg)

## Questions & Answers

**Q: Is this oil used for inboard Mercruiser?**
A: Castrol does not recommend using passenger car engine oils like Castrol GTX High Mileage 10W-30 in marine applications.

At this time, Castrol does NOT offer 4-stroke marine oil or NMMA certified engine oil therefore Castrol GTX High Mileage 10W-30 would NOT be recommended for use in a Mercruiser Inboard.

**Q: Can I use this oil in my zero turn mower john deere says 10W-30**
A: This is a blended half synthetic, if your engine requires 10W 30 this will work.
The purely synthetic oil is very thin and can find a leak in machinery very quickly.
This in my 95 YJ has performed well.

**Q: For the 10w30 synthetic blend or semi synthetic blend do you have to use a regular oil filter or synthetic oil filter?**
A: regular oil filter

**Q: How is this quality?**
A: Castrol motor oil is quality without question.
I have several cars some oil and some new . I use it in all of them.
The high mileage oil truly helps the cars with high mileage.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Castrol high mileage oil
*by D***F on December 28, 2025*

Works great. All of my vehicles are older so I use high mileage oil. The Castrol is a good choice.

### ⭐⭐⭐⭐⭐ Fair price
*by J***. on October 23, 2025*

Good quality product

### ⭐⭐⭐⭐⭐ its good stuff .crown vic 2010 police car
*by R***E on September 20, 2025*

been using for years never blew an engine yet had many cars

## Frequently Bought Together

- Castrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 5 Quarts
- FRAM Extra Guard PH7317, 10K Mile Change Automotive Replacement Interval Spin-On Engine Oil Filter for Select Vehicle Models
- FRAM Extra Guard PH3614, 10K Mile Change Automotive Replacement Interval Spin-On Engine Oil Filter for Select Vehicle Models

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-03*