---
product_id: 49554709
title: "Engine Stop Leak for Petrol & Diesel Engines 300 ml, Made in the UK"
brand: "stp"
price: "€ 12.51"
currency: EUR
in_stock: true
category: "Stp"
url: https://www.desertcart.pt/products/49554709-engine-stop-leak-for-petrol-and-diesel-engines-300-ml
store_origin: PT
region: Portugal
---

# universal fit for petrol & diesel engines conditions seals & boosts oil protection 300ml concentrated formula Engine Stop Leak for Petrol & Diesel Engines 300 ml, Made in the UK

**Brand:** stp
**Price:** € 12.51
**Availability:** ✅ In Stock

## Summary

> 🛢️ Seal the deal on leaks before they seal your fate!

## Quick Answers

- **What is this?** Engine Stop Leak for Petrol & Diesel Engines 300 ml, Made in the UK by stp
- **How much does it cost?** € 12.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/49554709-engine-stop-leak-for-petrol-and-diesel-engines-300-ml)

## Best For

- stp enthusiasts

## Why This Product

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

## Key Features

- • **Made in the UK Quality:** Trusted British engineering for reliable, high-performance engine care.
- • **Universal Compatibility:** Works seamlessly with petrol and diesel engines across cars and trucks.
- • **Engine Seal Rejuvenation:** Revive worn gaskets and polymer seals for longer engine life.
- • **Stop Minor Oil Leaks Fast:** Say goodbye to costly drips and stains with a powerful sealant boost.
- • **No Filter Clogging Formula:** Zero solids means your engine flow stays smooth and uninterrupted.

## Overview

STP Engine Stop Leak is a 300ml concentrated additive designed to stop minor oil leaks by conditioning and renewing engine seals and gaskets. Compatible with petrol and diesel engines, it enhances the protective qualities of your existing engine oil without clogging filters. Made in the UK, this universal-fit formula helps extend engine life and prevent costly repairs.

## Description

STP Engine Stop Leak is formulated with a special agent to renew polymer seals and gaskets damaged by the heat of normal engine operation, which can otherwise result in oil leaks and expensive mechanical work. STP Engine Stop Leak will also increase the protection offered by the existing engine oil.

## Features

- Causes serious eye damage.
- Suspected of damaging fertility or the unborn child.
- STP Engine Stop Leak 300ml, to help stop minor oil leaks
- Stops Leaks: Helps put an end to minor oil leaks
- Rejuvenates: The stop leak oil additive also conditions engine seals and gaskets
- Won’t Clog: Contains no solids, so won’t clog filters or inhibit flow
- Increases Protection: Makes normal engine oil even more protective

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004NLMH4Y |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | 396 in Automotive ( See Top 100 in Automotive ) 25 in Car Engine Oils |
| Brand Name | STP |
| Compatible with Vehicle Type | Car, Truck |
| Container Type | Bottle |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.3 4.3 out of 5 stars (833) |
| Global Trade Identification Number | 05020144500834 |
| Included Components | Bottle |
| Item Highlight | Improved Concentrated Formula Conditions your Engine and Prevents Minor Oil Leaks, Mechanical Car Cleaning Products |
| Item Type Name | Engine Stop Leak |
| Item Weight | 300 Grams |
| Liquid Volume | 300 Millilitres |
| Manufacturer | STP |
| Manufacturer Part Number | E302006101 |
| Model Number | GST63300EN |
| Number of Packs | 1 |
| Size | 300 ML |
| Unit Count | 300.0 millilitre |

## Product Details

- **Automotive Fit Type:** Universal Fit
- **Brand:** STP
- **Liquid volume:** 300 Millilitres
- **Package information:** Bottle
- **Vehicle service type:** Car, Truck

## Images

![Engine Stop Leak for Petrol & Diesel Engines 300 ml, Made in the UK - Image 1](https://m.media-amazon.com/images/I/61lN3GwrIVL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can i use in any car**
A: yes you can

**Q: Will it stop a fule pump leak**
A: No it won’t doesn’t even stop engine leaks

**Q: Can you use on power steering leak which takes hydraulic oil?**
A: It didn’t work for my car the problem was something more serious

**Q: Is this an AT-205 alternative?**
A: No it's just an addition

## Frequently Bought Together

- STP Engine Stop Leak for Petrol & Diesel Engines 300 ml, Improved Concentrated Formula, Conditions your Engine and Prevents Minor Oil Leaks, Mechanical Car Cleaning Products, Made in the UK
- STP Engine Degreaser Professional Series 500ml, Penetrates and Dissolves Heavy Dirt and Deposits, Easily and Quickly Restore your Engine's Performance for a Smoother Engine

---

## 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.pt/products/49554709-engine-stop-leak-for-petrol-and-diesel-engines-300-ml](https://www.desertcart.pt/products/49554709-engine-stop-leak-for-petrol-and-diesel-engines-300-ml)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-04*