---
product_id: 2526360
title: "Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart, Pack of 6"
brand: "castrol"
price: "€ 50.39"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.ie/products/2526360-castrol-gtx-high-mileage-5w-30-synthetic-blend-motor-oil
store_origin: IE
region: Ireland
---

# Improved Fuel Economy Engine Wear Protection 5W-30 Synthetic Blend Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart, Pack of 6

**Brand:** castrol
**Price:** € 50.39
**Availability:** ❌ Out of Stock

## Summary

> 🛢️ Keep your high-mileage ride young, sleek, and unstoppable!

## Quick Answers

- **What is this?** Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart, Pack of 6 by castrol
- **How much does it cost?** € 50.39 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/2526360-castrol-gtx-high-mileage-5w-30-synthetic-blend-motor-oil)

## 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

- • **Trusted by Millions:** #1 high-mileage motor oil brand with 4.8-star rating from over 8,000 reviews—join the savvy drivers who won’t settle.
- • **Burn Less, Drive More:** Exceptional oil burn-off protection exceeds industry standards, saving you money and hassle.
- • **Seal the Deal on Leaks:** Advanced seal conditioners reduce leaks, keeping your engine running smoothly mile after mile.
- • **Fight Sludge Like a Pro:** Superior dispersancy formula keeps your engine cleaner by preventing sludge buildup.
- • **Extend Your Engine’s Life:** Phosphorus Replacement Technology protects emission systems and catalytic converters for high-mileage vehicles.

## Overview

Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil is engineered for vehicles with over 75,000 miles, delivering superior protection against engine wear, sludge, and leaks. Featuring Phosphorus Replacement Technology, it safeguards emission systems and improves fuel economy, making it the top-rated choice for prolonging engine life in passenger cars, trucks, and SUVs.

## Description

Castrol® GTX® High Mileage 5W-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 fanboy - Best oil for my GF's high mileage car, good price.
Review: Quality oil, good price, quick delivery. - Great oil. Good price.

## 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 | Meets Ford WSS-M2C946-B1 | Meets Ford WSS-M2C961-A1 | * Based on API and ACEA volatility specifications | ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008BOG0PG |
| Best Sellers Rank | #490 in Automotive ( See Top 100 in Automotive ) #14 in Motor Oils |
| Brand | Castrol |
| Brand Name | Castrol |
| Compatible with Vehicle Type | For use in vehicles with over 75,000 miles, Passenger cars, trucks, and SUVs |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 8,134 Reviews |
| Global Trade Identification Number | 00079191064405 |
| Included Components | Motor Oil |
| Item Type Name | Motor Oil |
| Item Weight | 3 Pounds |
| Liquid Volume | 6 Quarts |
| Manufacturer | Castrol |
| Manufacturer Part Number | 06440 |
| Manufacturer Warranty Description | 12 Months |
| Package Information | Bottle |
| UPC | 079191064405 |
| Unit Count | 192.0 Fluid Ounces |
| Vehicle Service Type | For use in vehicles with over 75,000 miles, Passenger cars, trucks, and SUVs |
| Viscosity | 5W-30 SAE Grade |

## Product Details

- **Brand:** Castrol
- **Liquid Volume:** 6 Quarts
- **Package Information:** Bottle
- **Vehicle Service Type:** For use in vehicles with over 75,000 miles, Passenger cars, trucks, and SUVs
- **Viscosity:** 5W-30 SAE Grade

## Images

![Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart, Pack of 6 - Image 1](https://m.media-amazon.com/images/I/61rEliTHt0L.jpg)
![Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart, Pack of 6 - Image 2](https://m.media-amazon.com/images/I/61sNL2g9Y-L.jpg)
![Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart, Pack of 6 - Image 3](https://m.media-amazon.com/images/I/61YiAClmlGL.jpg)
![Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart, Pack of 6 - Image 4](https://m.media-amazon.com/images/I/61u0EJanCDL.jpg)
![Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart, Pack of 6 - Image 5](https://m.media-amazon.com/images/I/61ryOetMLiL.jpg)

## Available Options

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

## Questions & Answers

**Q: What is the rated mileage for this?**
A: I don't think oil is rated, the engine it goes in is but synthetic oil will last longer than regular oil.

**Q: is this only one 1 quart bottle or six 1 quart bottles?**
A: Six (6) - 1 quart bottles.

**Q: Does this product includes filter?**
A: No filter with the product.

**Q: Is it ok to top off regular oil with some of this oil as needed for a slow oil leak?**
A: I have a beater that i use for grocery shopping and Dr appts. It burns oil possibly worn valve guide seals. A friend told me to use synthetic or high mileage and it should help a little. Since i burn about a quart a month ive used everything from this to little known brands. My car still runs fine, passes inspection, no check engine. Oh by the way using a synthetic or a high mileage did cut down on oil consumption.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Castrol fanboy
*by B***B on January 23, 2026*

Best oil for my GF's high mileage car, good price.

### ⭐⭐⭐⭐⭐ Quality oil, good price, quick delivery.
*by J***. on January 17, 2026*

Great oil. Good price.

### ⭐⭐⭐⭐⭐ Works like a champ
*by D***S on January 4, 2026*

I've been using Castrol oil for years. Good stuff.

## Frequently Bought Together

- Castrol Gtx High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart, Pack of 6
- Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts
- FRAM Extra Guard PH3506, 10K Mile Change Automotive Replacement Interval Spin-On Engine Oil Filter for Select Vehicle Models

---

## 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.ie/products/2526360-castrol-gtx-high-mileage-5w-30-synthetic-blend-motor-oil](https://www.desertcart.ie/products/2526360-castrol-gtx-high-mileage-5w-30-synthetic-blend-motor-oil)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-25*