---
product_id: 689552563
title: "Mannol 9990 Motor Doctor Piston Ring and Engine Oil Additive - 350 ml"
brand: "mannol"
price: "$13.19"
currency: USD
in_stock: true
reviews_count: 5
category: "Mannol"
url: https://www.desertcart.us/products/689552563-mannol-9990-motor-doctor-piston-ring-and-engine-oil-additive
store_origin: US
region: United States of America
---

# Reduces engine smoke by 30% Boosts oil pressure +15% Ensures flawless cold starts Mannol 9990 Motor Doctor Piston Ring and Engine Oil Additive - 350 ml

**Brand:** mannol
**Price:** $13.19
**Availability:** ✅ In Stock

## Summary

> ⚙️ Keep your engine young, clean, and unstoppable!

## Quick Answers

- **What is this?** Mannol 9990 Motor Doctor Piston Ring and Engine Oil Additive - 350 ml by mannol
- **How much does it cost?** $13.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/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

- • **Engine Armor:** Forms a durable lubricant film that extends your engine’s lifespan.
- • **Revive & Thrive:** Restores worn engines by increasing oil pressure and cutting oil consumption.
- • **Smoke-Free Drive:** Prevents oil leakage into combustion chambers, slashing soot and smoke buildup.
- • **Cold Start Champion:** Guarantees smooth, problem-free starts even in harsh conditions.
- • **Universal Compatibility:** Perfectly blends with both synthetic and mineral oils for versatile use.

## Overview

Mannol 9990 Motor Doctor is a premium 350 ml engine oil additive designed to boost oil pressure, reduce oil consumption, and prevent soot formation. Compatible with synthetic and mineral oils, it ensures flawless engine performance, extends engine life, and guarantees reliable cold starts, making it a must-have for maintaining high-performance vehicles.

## Description

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

Review: Ik heb een oudere auto met heel wat kilometers op de teller. Door slijtage was er frictie tussen verschillende motoronderdelen. Ik deed een blikje Mannol in het oliereservoir terwijl de motor nog warm was en sindsdien voel en hoor ik het verschil. Door de hogere viscositeit verbruikt de wagen nu ook beduidend minder olie.
Review: تحت التجربة _المنتج وصل كما ف الصور..سعر جيد..شكرا امازون .. التوصيل سريع

## 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 | #18,924 in Automotive ( See Top 100 in Automotive ) #120 in Oil & Fluid Additives |
| Brand Name | MANNOL |
| Container Type | Can |
| Customer Reviews | 4.5 4.5 out of 5 stars (234) |
| Item Form | Oil |
| Item Weight | 308 Grams |
| Liquid Volume | 300 Milliliters |
| Manufacturer | Mannol |
| Material | Synthetic |
| Model Number | MN9990-030ME |
| Number of Items | 1 |
| Part Number | MN9990-030ME |
| 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

### ⭐⭐⭐⭐⭐ Review
*by M***N on 30 October 2024*

Ik heb een oudere auto met heel wat kilometers op de teller. Door slijtage was er frictie tussen verschillende motoronderdelen. Ik deed een blikje Mannol in het oliereservoir terwijl de motor nog warm was en sindsdien voel en hoor ik het verschil. Door de hogere viscositeit verbruikt de wagen nu ook beduidend minder olie.

### ⭐⭐⭐⭐⭐ Review
*by W***Y on 5 February 2024*

تحت التجربة _المنتج وصل كما ف الصور..سعر جيد..شكرا امازون .. التوصيل سريع

### ⭐⭐⭐⭐⭐ Review
*by S***T on 19 April 2026*

I Always use Mannol products on my vehicles as always value for money,quality products,easy to use,reduces engine noise level & prevents leaking,keeps engine running smoothly would high recommend mannol products

## Frequently Bought Together

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

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-08*