---
product_id: 49424931
title: "Slick-50 61399750 Engine Treatment 750ml"
brand: "slick 50"
price: "¥11717"
currency: JPY
in_stock: true
reviews_count: 13
category: "Slick 50"
url: https://www.desertcart.jp/products/49424931-slick-50-61399750-engine-treatment-750ml
store_origin: JP
region: Japan
---

# Reduces friction heat Compatible with petrol & diesel engines Self-regenerating anti-wear layer Slick-50 61399750 Engine Treatment 750ml

**Brand:** slick 50
**Price:** ¥11717
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your engine running cooler, cleaner, and longer — because your ride deserves the best.

## Quick Answers

- **What is this?** Slick-50 61399750 Engine Treatment 750ml by slick 50
- **How much does it cost?** ¥11717 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/49424931-slick-50-61399750-engine-treatment-750ml)

## Best For

- slick 50 enthusiasts

## Why This Product

- Trusted slick 50 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ultimate Heat Defense:** Minimizes friction-generated heat for peak engine performance under stress.
- • **Engine Longevity Booster:** Forms a protective, self-healing shield to drastically reduce wear and tear.
- • **Universal Oil Compatibility:** Seamlessly works with mineral & semi-synthetic oils in petrol and diesel engines.
- • **Fuel Efficiency & Reliability:** Enhances fluid operation to reduce fuel consumption and costly breakdown risks.
- • **Cleaner Engine, Smoother Drive:** Dispersants prevent sludge buildup, ensuring optimal engine cleanliness and efficiency.

## Overview

Slick-50 61399750 Engine Treatment (750ml) is a high-performance additive designed to protect engines from friction and heat, especially under heavy load or stressful driving conditions. Compatible with petrol and diesel engines using mineral or semi-synthetic oils, it forms a self-regenerating anti-wear layer, reduces sludge buildup, and promotes smoother operation, extending engine life and improving fuel efficiency.

## Description

Slick50® Engine Treatment is a unique formula that helps to protect the engine against friction and heat, in turn assisting to extend the life of the engine. Suitable for use in both Petrol and Diesel engines, including vehicles with turbochargers, that use mineral or semi-synthetic motor oils. Regular use ensures smoother running, and a more stable and durable engine. Protection to the engine is especially important in high-stress driving conditions when driving fluidity is affected by traffic or roadworks, if the vehicle is towing or even when the weather is exceptionally cold or the vehicle does frequent short trips. A more fluid running vehicle can even lead to less fuel consumption and the risk of breakdowns and costly engine repairs can be reduced. One pack of Slick50 Engine Treatment, 750ml is suitable for engines up to 3000cc.

Review: Great product - Used for decades. Great product Works well
Review: Proven performance and reliability - Better mpg quieter engine large reduction of cold start engine wear been using this product for nearly 40 years put it in my engine and gearbox on every car I’ve had inspected engine on a tear down on high mileage engine hardly any wear bores still had honing marks from new did over 10000 miles would highly recommend love slick 50 products Richard g

## Features

- Safety data sheet available on request.
- Helps to protect the engine against fiction and heat when operating under stress, such as towing, carrying heavy loads or in heavy traffic.
- Contains proprietary friction modifier- creates an enhanced layer of lubrication, minimizing friction produced heat, for a smoother operation.
- Anti-wear agent forms a self-regenerating protective surface between metal parts to prevent these grating together.
- A dispersant helps to keep the engine clean by preventing the build-up of sludge and deposits on engine parts.
- Compatible with all major types of mineral and semi-synthetic motor oils, suitable for use in both Petrol and Diesel engines.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007JL126Y |
| Best Sellers Rank | 4,497 in Automotive ( See Top 100 in Automotive ) 16 in Engine Oil Additives |
| Brand | Slick 50 |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,230) |
| Date First Available | 3 Feb. 2009 |
| Item Weight | 770 g |
| Item model number | 61399750 |
| Manufacturer | Slick 50 |
| Manufacturer part number | SCK61399750-GL |
| Model | 750ml Engine Treatment |
| Product Dimensions | 9.8 x 6.6 x 21.7 cm; 770 g |
| Viscosity | 5W-30 sae_grade |

## Product Details

- **Brand:** Slick 50
- **Liquid volume:** 750 Millilitres
- **Package information:** Bottle
- **Vehicle service type:** Car
- **Viscosity:** 5W-30 sae_grade

## Images

![Slick-50 61399750 Engine Treatment 750ml - Image 1](https://m.media-amazon.com/images/I/91N9bVLZuwL.jpg)

## Available Options

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

## Questions & Answers

**Q: is this size (500ml) ok for a 2.8litre engine**
A: No, you will need 750ml for a 2.8 litre engine

**Q: Is 500ml okay for Vauxhall insignia**
A: For engines up to 1400cc use the 500ml bottle, for engines above 1400 use the 750ml bottle.  If your Vauxhall is an automatic then I wouldn't use it at all as you could do more harm than good.

**Q: Can I use a small quantity in my power steering**
A: Sorry, I don't know but suspect the answer would be 'no'.  I think the way this stuff works is that it provides a slippy lubricant on the engine cylinders i.e.  I've used this (snake oil) on several cars in the oil but only ever been persuaded it works when an old bmw E30 325 virtually lost all its oil but still ran ok and didn't seize or overheat.

**Q: Will this quieten my diesel engine which suffers from diesel knock ??**
A: No sorry it is my understanding it will not. Knocking is more or less unavoidable in diesel engines, where fuel is injected into highly compressed air towards the end of the compression stroke. There is a short lag between the fuel being injected and combustion starting. It doesnt have anything to do with friction as such nor can it be reduced or removed with slick 50. Hope that helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by C***E on 3 September 2025*

Used for decades. Great product Works well

### ⭐⭐⭐⭐⭐ Proven performance and reliability
*by R***T on 23 October 2025*

Better mpg quieter engine large reduction of cold start engine wear been using this product for nearly 40 years put it in my engine and gearbox on every car I’ve had inspected engine on a tear down on high mileage engine hardly any wear bores still had honing marks from new did over 10000 miles would highly recommend love slick 50 products Richard g

### ⭐⭐⭐⭐⭐ Saves wear on engine
*by A***N on 9 October 2025*

Quality engine product

## Frequently Bought Together

- Slick 50 Engine Treatment 750ml
- Slick 50 Original Classic Engine Treatment with Cerflon, Ceramic Protection Against Friction and Heat, 32 fl. oz, 1 Pack
- Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-24*