---
product_id: 689552563
title: "Mannol 9990 Motor Doctor Piston Ring and Engine Oil Additive - 350 ml"
brand: "mannol"
price: "€ 14.34"
currency: EUR
in_stock: true
reviews_count: 5
category: "Mannol"
url: https://www.desertcart.com.cy/products/689552563-mannol-9990-motor-doctor-piston-ring-and-engine-oil-additive
store_origin: CY
region: Cyprus
---

# Reduces engine smoke by 40% Boosts oil pressure +15% Compatible with synthetic & mineral oils Mannol 9990 Motor Doctor Piston Ring and Engine Oil Additive - 350 ml

**Brand:** mannol
**Price:** € 14.34
**Availability:** ✅ In Stock

## Summary

> ⚡️ Unlock peak engine performance and never miss a smooth start!

## Quick Answers

- **What is this?** Mannol 9990 Motor Doctor Piston Ring and Engine Oil Additive - 350 ml by mannol
- **How much does it cost?** € 14.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/689552563-mannol-9990-motor-doctor-piston-ring-and-engine-oil-additive)

## Best For

- mannol enthusiasts

## Why This Product

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

## Key Features

- • **Smoke-Free Drive:** Prevent soot and smoke formation for a cleaner, more efficient combustion.
- • **Engine Revival Power:** Revitalize worn engines by increasing oil pressure and cutting oil consumption.
- • **Extended Engine Life:** Forms a durable lubricant film that prolongs your engine’s prime.
- • **Cold Start Confidence:** Guarantee flawless engine starts even in the harshest conditions.
- • **Universal Oil Compatibility:** Seamlessly blends with both synthetic and mineral oils for versatile use.

## Overview

Mannol 9990 Motor Doctor is a 350 ml synthetic oil additive designed to boost oil pressure, reduce oil consumption, and prevent engine smoke in both new and worn engines. Compatible with synthetic and mineral oils, it ensures flawless cold starts and extends engine life by forming a reliable lubricant film under tough conditions.

## Description

Increases oil pressure and decreases oil consumption in worn out engines.

Review: Use every oil change. - Use this on every oil change for my well aged Toyota. Seems to work and help it from burning oil.
Review: Giusto il prezzo - Fa il suo dovere. Su un motore marino datato

## Features

- Increases oil pressure and decreases oil consumption in worn out engines.
- Prevents oil from getting into the combustion chamber and opposes the formation of soot and engine smoke.
- Prolongs new engine's life and forms a reliable lubricant film on the engine parts.
- Ensures flawless engine functionality under hard conditions and guarantees problem-free cold starts.
- Suitably mixed with synthetic and mineral oils.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ZPO6UFK |
| Best Sellers Rank | #6,162 in Automotive ( See Top 100 in Automotive ) #50 in Oil & Fluid Additives |
| Brand | MANNOL |
| Brand Name | MANNOL |
| Container Type | Can |
| Customer Reviews | 4.6 out of 5 stars 263 Reviews |
| Item Form | Oil |
| Item Weight | 308 Grams |
| Item weight | 308 Grams |
| Liquid Volume | 300 Milliliters |
| Liquid volume | 300 Milliliters |
| Manufacturer | Mannol |
| Material | Synthetic |
| Model Number | MN9990-030ME |
| Number of Items | 1 |
| Number of Packs | 1 |
| Package information | Can |
| Part Number | MN9990-030ME |
| Recommended Uses For Product | Internal Combustion Engines |
| Recommended uses for product | Internal Combustion Engines |
| SAE J300 Viscosity Grade | 5W-30 |
| Specific Uses For Product | Suitable for Worn Out and New Engines |
| Unit Count | 350 Milliliters |
| Viscosity | 5w-30 |

## Product Details

- **Brand:** MANNOL
- **Item weight:** 308 Grams
- **Liquid volume:** 300 Milliliters
- **Material:** Synthetic
- **Package information:** Can

## Images

![Mannol 9990 Motor Doctor Piston Ring and Engine Oil Additive - 350 ml - Image 1](https://m.media-amazon.com/images/I/81fM1y4O-WL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Use every oil change.
*by R***E on 31 July 2026*

Use this on every oil change for my well aged Toyota. Seems to work and help it from burning oil.

### ⭐⭐⭐⭐⭐ Giusto il prezzo
*by N***O on 9 August 2026*

Fa il suo dovere. Su un motore marino datato

### ⭐⭐⭐⭐⭐ Un gran aditivo
*by D***L on 21 April 2026*

Buen aditivo ..servicio de entrega muy rápido

## Frequently Bought Together

- Mannol Motor Oil Additive
- LIQUI MOLY Valve Clean | 150 ml | Petroladititive | SKU: 2001, Blue

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**Shop now:** [https://www.desertcart.com.cy/products/689552563-mannol-9990-motor-doctor-piston-ring-and-engine-oil-additive](https://www.desertcart.com.cy/products/689552563-mannol-9990-motor-doctor-piston-ring-and-engine-oil-additive)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-08-17*