---
product_id: 62680945
title: "STP Synthetic Oil Treatment for Petrol and Diesel Engines 300ml, Protects Against Engine Wear, Reduces Pistol Deposit and Oil Consumption, Mechanical Car Cleaning Products, Made in the UK"
brand: "stp"
price: "A$26"
currency: AUD
in_stock: false
reviews_count: 13
url: https://www.desertcart.com.au/products/62680945-stp-synthetic-oil-treatment-for-petrol-and-diesel-engines-300ml
store_origin: AU
region: Australia
---

# Lowers oil consumption Reduces piston deposits Protects engine wear STP Synthetic Oil Treatment for Petrol and Diesel Engines 300ml, Protects Against Engine Wear, Reduces Pistol Deposit and Oil Consumption, Mechanical Car Cleaning Products, Made in the UK

**Brand:** stp
**Price:** A$26
**Availability:** ❌ Out of Stock

## Summary

> 🛢️ Keep your engine running like new — because your ride deserves the best!

## Quick Answers

- **What is this?** STP Synthetic Oil Treatment for Petrol and Diesel Engines 300ml, Protects Against Engine Wear, Reduces Pistol Deposit and Oil Consumption, Mechanical Car Cleaning Products, Made in the UK by stp
- **How much does it cost?** A$26 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/62680945-stp-synthetic-oil-treatment-for-petrol-and-diesel-engines-300ml)

## 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

- • **Oil Saver:** Cuts down oil consumption, saving you money and hassle
- • **Engine Armor:** Shields your engine from wear and tear for longer life
- • **Deposit Destroyer:** Minimizes piston deposits to keep performance peak
- • **Oxidation Fighter:** Prevents oil breakdown, ensuring cleaner, healthier engine fluids
- • **Viscosity Stabilizer:** Maintains optimal oil thickness for smooth engine operation

## Overview

STP Synthetic Oil Treatment (300ml) is a UK-made, advanced formula designed for petrol and diesel engines. It protects against engine wear by reducing piston deposits, lowers oil consumption, stabilizes oil viscosity, and fights oil oxidation to maintain engine health and performance.

## Description

STP Synthetic Oil Treatment delivers all the benefits of our traditional oil treatment but has been re-formulated for petrol and diesel oils and is low SAP compatible.

Review: Review - Good deal!!
Review: Good stuff - Brilliant my car was overdue service to stop the oil thinning did the job no problem

## Features

- What You'll Get - 300 ml Synthetic Oil Treatment
- Helps protect against engine wear by reducing piston deposits
- Reduces oil consumption
- Fights oil oxidation and breakdwon
- Stabilizes oil viscosity

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B8W9CTH |
| Best Sellers Rank | 63,272 in Automotive ( See Top 100 in Automotive ) 545 in Car Engine Oils |
| Brand | STP |
| Customer Reviews | 4.6 4.6 out of 5 stars (249) |
| Date First Available | 6 Mar. 2018 |
| Item Weight | 290 g |
| Item model number | GST67300EN |
| Manufacturer | Spectrum Brands Ltd |
| Manufacturer part number | GST67300EN |
| Product Dimensions | 4.14 x 8.72 x 14.84 cm; 290 g |
| Viscosity | 10W 40 |

## Product Details

- **Brand:** STP
- **Liquid volume:** 300 Millilitres
- **Package information:** Bottle
- **Vehicle service type:** Car
- **Viscosity:** 10W 40

## Images

![STP Synthetic Oil Treatment for Petrol and Diesel Engines 300ml, Protects Against Engine Wear, Reduces Pistol Deposit and Oil Consumption, Mechanical Car Cleaning Products, Made in the UK - Image 1](https://m.media-amazon.com/images/I/61sD0ui1fyL.jpg)
![STP Synthetic Oil Treatment for Petrol and Diesel Engines 300ml, Protects Against Engine Wear, Reduces Pistol Deposit and Oil Consumption, Mechanical Car Cleaning Products, Made in the UK - Image 2](https://m.media-amazon.com/images/I/71q2c6JkCUL.jpg)
![STP Synthetic Oil Treatment for Petrol and Diesel Engines 300ml, Protects Against Engine Wear, Reduces Pistol Deposit and Oil Consumption, Mechanical Car Cleaning Products, Made in the UK - Image 3](https://m.media-amazon.com/images/I/71wq1XJiW9L.jpg)
![STP Synthetic Oil Treatment for Petrol and Diesel Engines 300ml, Protects Against Engine Wear, Reduces Pistol Deposit and Oil Consumption, Mechanical Car Cleaning Products, Made in the UK - Image 4](https://m.media-amazon.com/images/I/71zo238bVtL.jpg)
![STP Synthetic Oil Treatment for Petrol and Diesel Engines 300ml, Protects Against Engine Wear, Reduces Pistol Deposit and Oil Consumption, Mechanical Car Cleaning Products, Made in the UK - Image 5](https://m.media-amazon.com/images/I/81P6I5OS8TL.jpg)

## Questions & Answers

**Q: Is this suitable with turbo diesel engines with a catalectic converter?**
A: Okay  it goes in the sump and makes the oil sticky. it is not part of the combustion, do no put it in fuel tank, its is lubricating oil not diesel. my car and van both are diesel the additive make the engine quieter, and holds oil on bearings etc. I've used STP for years, all my vehicles improve with it. NOT FUEL.

**Q: Do I have to add it when I change the oil (to the new one) or to the old oil before the oil change?**
A: Add it to the engine after your oil has been changed.  I always warm the container, in a jug of warm water, before opening it then add the oil additive to a warm engine, then run the engine for a few minutes to circulate the additive around the system.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***N on 20 October 2025*

Good deal!!

### ⭐⭐⭐⭐⭐ Good stuff
*by P***E on 9 October 2025*

Brilliant my car was overdue service to stop the oil thinning did the job no problem

### ⭐⭐⭐⭐⭐ Slippery Stuff
*by R***E on 17 March 2025*

I've used this twice now. Many years ago with 1970/80s cars I always used oil addatives, more meanigfull back then. However at the current price point I thought I would give this a try. I've used on an old Mini and VW Up on both occasions it has seemed to make the engine run smoother and quieter, especially the Up. Its my sons car and he has noticed the difference also. So for the price I would 100% recommend at the next service. Can't go wrong really.

## Frequently Bought Together

- STP Synthetic Oil Treatment for Petrol and Diesel Engines 300ml, Protects Against Engine Wear, Reduces Pistol Deposit and Oil Consumption, Mechanical Car Cleaning Products, Made in the UK
- Mannol 5 Litre Energy 5W-30 Engine Oil 7908 API SN/CH-4 ACEA C2 Premium Synthetic Ester Technology

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**Shop now:** [https://www.desertcart.com.au/products/62680945-stp-synthetic-oil-treatment-for-petrol-and-diesel-engines-300ml](https://www.desertcart.com.au/products/62680945-stp-synthetic-oil-treatment-for-petrol-and-diesel-engines-300ml)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-26*