---
product_id: 48193115
title: "Oil Additive | 300 ml | Oil additive | SKU: 2591"
brand: "liqui moly"
price: "€ 12.53"
currency: EUR
in_stock: true
reviews_count: 8
category: "Liqui Moly"
url: https://www.desertcart.ie/products/48193115-oil-additive-300-ml-oil-additive-sku-2591
store_origin: IE
region: Ireland
---

# High Flash Point 201°C for safety Universal Fit for all car engines 300 ml bottle, perfect multi-engine coverage Oil Additive | 300 ml | Oil additive | SKU: 2591

**Brand:** liqui moly
**Price:** € 12.53
**Availability:** ✅ In Stock

## Summary

> 🛠️ Tune your engine’s future with LIQUI MOLY’s pro-level smoothness!

## Quick Answers

- **What is this?** Oil Additive | 300 ml | Oil additive | SKU: 2591 by liqui moly
- **How much does it cost?** € 12.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/48193115-oil-additive-300-ml-oil-additive-sku-2591)

## Best For

- liqui moly enthusiasts

## Why This Product

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

## Key Features

- • **Engine Smoother:** Reduces friction for quieter, more responsive rides
- • **Long-Lasting Volume:** 300 ml size treats multiple engines without waste
- • **Pro-Grade Reliability:** Trusted by tuning pros for consistent performance
- • **Heat-Resistant Formula:** High 201°C flash point ensures safety under pressure
- • **Universal Compatibility:** Works seamlessly with all car engines

## Overview

LIQUI MOLY Oil Additive (300 ml) is a professional-grade engine treatment designed to reduce friction, improve smoothness, and extend engine life. With a universal fit for all car engines and a high flash point of 201°C, it ensures safe, reliable performance. Ideal for tuning shops and automotive enthusiasts, this additive delivers quieter operation and enhanced responsiveness, making it a must-have for anyone serious about engine care.

## Description

Oil additive

Review: “Essential for My Tuning Business – Smooth, Reliable, and Professional!” - I’ve been using LIQUI MOLY Oil Additive 300 ml in my car tuning and workshop business for months now, and it’s genuinely impressive. I’ve tested it on a wide variety of engines — from everyday vehicles to high-performance tuning projects — and it consistently delivers excellent results. The additive improves engine smoothness, reduces friction, and helps keep even older engines running efficiently. I’ve noticed quieter operation and more responsive performance after use, which gives me confidence when returning tuned or serviced vehicles to my customers. I’ve tried other oil additives before, but none match the quality, reliability, and consistency of LIQUI MOLY. It’s perfect for professional use, and the 300 ml size is ideal for treating multiple engines without waste. For anyone running a tuning, repair, or automotive workshop, this additive is a must-have. It’s a small investment for real improvements in engine performance and longevity. Highly recommend!
Review: Good product - Realy good stuff,made my engine produce less noise,good product

## Features

- Item Package Length: 5.5cm
- Item Package Width: 5.5cm
- Item Package Height: 18.5cm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0096Y6SX4 |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | 218 in Automotive ( See Top 100 in Automotive ) 5 in Greases & Lubricants 9 in Car Engine Oils |
| Brand | Liqui Moly |
| Brand Name | Liqui Moly |
| Compatible with Vehicle Type | Car |
| Container Type | Bottle |
| Country Of Origin | Italy |
| Customer Reviews | 4.6 out of 5 stars 2,777 Reviews |
| Flash Point | 201 Degrees Celsius |
| Flash point | 201 Degrees Celsius |
| Item Type Name | Oil additive |
| Item Weight | 0.3 Kilograms |
| Liquid Volume | 300 Millilitres |
| Liquid volume | 300 Millilitres |
| Manufacturer | LIQUI MOLY |
| Manufacturer Part Number | 2591 |
| Package information | Bottle |
| Unit Count | 300.0 millilitre(s) |
| Vehicle service type | Car |

## Product Details

- **Brand:** Liqui Moly
- **Flash point:** 201 Degrees Celsius
- **Liquid volume:** 300 Millilitres
- **Package information:** Bottle
- **Vehicle service type:** Car

## Images

![Oil Additive | 300 ml | Oil additive | SKU: 2591 - Image 1](https://m.media-amazon.com/images/I/81RtBHmEAPL.jpg)

## Available Options

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

## Questions & Answers

**Q: Hi, It seems like that oil additive goes into engine oil? true?**
A: Hi, Yes, make sure the can/bottle has been warmed up in this cold weather, and give it a good shaking for a couple of minutes to thoroughly mix it, pour most of it in then stand the container on end in the cam cover for a few minutes to get it all out of the container.
Rick,
Gainsborough.

**Q: some seller says that is not suitable for engine with wet clutch but only vehicle with separate gearbox; I have Honda SH300 can i use it?**
A: I’ve heard not to use with a wet clutch as well! If you’re unsure the answer should always be No! 

Best Mike

**Q: I have a two 6bta cummins that take 14liters of engine oil each. how many cans per engine?**
A: I would add two 300ml of additive.

**Q: How much do I need for a 2005 6.6 duramax?**
A: The vehicle takes 9.5 litres of oil so I would use two bottles

## Customer Reviews

### ⭐⭐⭐⭐⭐ “Essential for My Tuning Business – Smooth, Reliable, and Professional!”
*by T***D on 7 December 2025*

I’ve been using LIQUI MOLY Oil Additive 300 ml in my car tuning and workshop business for months now, and it’s genuinely impressive. I’ve tested it on a wide variety of engines — from everyday vehicles to high-performance tuning projects — and it consistently delivers excellent results. The additive improves engine smoothness, reduces friction, and helps keep even older engines running efficiently. I’ve noticed quieter operation and more responsive performance after use, which gives me confidence when returning tuned or serviced vehicles to my customers. I’ve tried other oil additives before, but none match the quality, reliability, and consistency of LIQUI MOLY. It’s perfect for professional use, and the 300 ml size is ideal for treating multiple engines without waste. For anyone running a tuning, repair, or automotive workshop, this additive is a must-have. It’s a small investment for real improvements in engine performance and longevity. Highly recommend!

### ⭐⭐⭐⭐⭐ Good product
*by J***N on 6 January 2026*

Realy good stuff,made my engine produce less noise,good product

### ⭐⭐⭐⭐⭐ Smooth As Silk
*by U***P on 30 July 2024*

My 85000mile Astra CUTIE 1.6 was in need of some tender Loving Care so bought this amazing product. In years gone by I used a similar treatment called Molyslip back in the 60s&70s. This modern treatment is exactly the same under a different brand name. Make sure you SHAKE THE CAN WELL for at least five minutes. I carried it round in my pocket for a morning. This allows The molydisulphide compounds to agitate adequately and mix with the additive prior to adding to your engine. Took the car for 10mile run to get a nice hot engine prior to adding the treatment then ran the car fast for further 10miles to ensure completion mixing of contents. Within 15min of adding the engine sound changed and knock disappeared. Rested the car overnight after returning from run. Start up the following morning was as smooth as silk. No rattling lovely even tick over. Ah Bliss. Wouldn't hesitate to recommend this product. The Astra performance was transformed. Fabulous acceleration through the auto box. Overall a very happy car.😁😁

## Frequently Bought Together

- LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591
- LIQUI MOLY Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2427
- Liqui Moly 2770 - Engine Oil Additive

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-11*