---
product_id: 49554709
title: "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"
brand: "stp"
price: "€ 22.10"
currency: EUR
in_stock: true
reviews_count: 13
category: "Stp"
url: https://www.desertcart.de/products/49554709-engine-stop-leak-for-petrol-and-diesel-engines-300-ml
store_origin: DE
region: Germany
---

# Compatible with petrol & diesel Seals & gasket renewal 300 ml concentrated formula 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

**Brand:** stp
**Price:** € 22.10
**Availability:** ✅ In Stock

## Summary

> 🛠️ Stop leaks, start peace of mind—engine care made effortless!

## Quick Answers

- **What is this?** 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 by stp
- **How much does it cost?** € 22.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/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

- • **Engine TLC:** Conditions your engine to extend its life and performance
- • **Seal the Deal:** Renews polymer seals and gaskets to stop costly oil leaks
- • **Trusted & Tested:** Top-rated with 4.4 stars from over 2,700 users—join the savvy drivers
- • **Concentrated Power:** 300 ml formula boosts engine oil protection effectively
- • **Dual-Fuel Defender:** Works seamlessly with both petrol and diesel engines

## Overview

STP Engine Stop Leak is a UK-made, 300 ml concentrated additive designed to renew damaged polymer seals and gaskets in petrol and diesel engines, preventing minor oil leaks and enhancing engine oil protection. Highly rated by thousands, it’s a trusted solution for maintaining engine health and avoiding 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.

Review: It works - Worked perfect on my diesel golf engine ! Stopped the leak and the smell
Review: Great product and highly recommend - Had a small leak under my van. Looked this up online and the reviews were good so I thought I would try it and I can tell you I'm glad I did. I put this in and went to work the next day where there were a few drops of oil there was nothing and hasn't leaked since. It's been 6 weeks now and still going strong

## Features

- Causes serious eye damage.
- Suspected of damaging fertility or the unborn child.
- car parts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004NLMH4Y |
| Best Sellers Rank | 1,271 in Automotive ( See Top 100 in Automotive ) 73 in Car Engine Oils |
| Brand | STP |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,751) |
| Date First Available | 13 Feb. 2011 |
| Item Weight | 300 g |
| Item model number | GST63300EN |
| Manufacturer | STP |
| Manufacturer part number | E302006100 |
| Model | ST63300EN |
| OEM Part Number | ST63300EN |
| Product Dimensions | 10 x 7 x 21.5 cm; 300 g |
| Viscosity | 5W 20 |

## Product Details

- **Brand:** STP
- **Liquid volume:** 300 Millilitres
- **Package information:** Bottle
- **Vehicle service type:** Car, Truck
- **Viscosity:** 5W 20

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61lN3GwrIVL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/71PjDOqLOxL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/71XdtTnC3-L.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/71AaMurT-0L.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/81bO6VZGHpL.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

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works
*by N***R on 12 October 2025*

Worked perfect on my diesel golf engine ! Stopped the leak and the smell

### ⭐⭐⭐⭐⭐ Great product and highly recommend
*by R***X on 30 December 2025*

Had a small leak under my van. Looked this up online and the reviews were good so I thought I would try it and I can tell you I'm glad I did. I put this in and went to work the next day where there were a few drops of oil there was nothing and hasn't leaked since. It's been 6 weeks now and still going strong

### ⭐⭐⭐⭐ Looks like it works
*by D***T on 19 January 2026*

Seems to have done the trick!

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

---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-25*