---
product_id: 650702802
title: "ATS Chemical 505 CRO Oil System Treatment - 12 oz Engine Oil Additive - Cleans Sludge, Reduces Emissions, Quiet Smooth Idle & Restores Performance in High-Mileage Gas & Diesel Engines"
brand: "ats chemical"
price: "₨2666"
currency: SCR
in_stock: true
reviews_count: 5
category: "Ats Chemical"
url: https://www.desertcart.sc/products/650702802-ats-chemical-505-cro-oil-system-treatment-12-oz-engine
store_origin: SC
region: Seychelles
---

# Reduces emissions & sludge Restores engine smoothness 12 oz precision dosing ATS Chemical 505 CRO Oil System Treatment - 12 oz Engine Oil Additive - Cleans Sludge, Reduces Emissions, Quiet Smooth Idle & Restores Performance in High-Mileage Gas & Diesel Engines

**Brand:** ats chemical
**Price:** ₨2666
**Availability:** ✅ In Stock

## Summary

> 🛠️ Unlock your engine’s hidden potential — don’t let sludge steal your ride!

## Quick Answers

- **What is this?** ATS Chemical 505 CRO Oil System Treatment - 12 oz Engine Oil Additive - Cleans Sludge, Reduces Emissions, Quiet Smooth Idle & Restores Performance in High-Mileage Gas & Diesel Engines by ats chemical
- **How much does it cost?** ₨2666 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/650702802-ats-chemical-505-cro-oil-system-treatment-12-oz-engine)

## Best For

- ats chemical enthusiasts

## Why This Product

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

## Key Features

- • **Emission Reducer:** Cuts harmful emissions for a greener, compliant ride
- • **Friction Fighter:** Enhances lubrication to reduce wear and extend engine life
- • **Quiet Power Boost:** Smooths idle and quiets noisy high-mileage engines
- • **Deep Carbon Cleanse:** Dissolves stubborn sludge & varnish for a like-new engine feel
- • **Universal Compatibility:** Safe for gas & diesel engines, perfect for your fleet or daily driver

## Overview

The 505 CRO Oil System Treatment is a 12 oz engine additive designed to clean internal deposits like sludge and varnish, improve lubrication, reduce emissions, and restore smooth, quiet performance in high-mileage gas and diesel engines. Trusted by professionals and enthusiasts alike, it’s easy to use and proven to extend engine life while optimizing efficiency.

## Description

The 505 CRO Oil System Treatment (12 FL OZ) is an automotive product designed to improve the performance and longevity of your vehicle's engine by enhancing its oil system. This treatment typically works to: Clean and Protect: Helps remove sludge, varnish, and other deposits that can accumulate in the oil system, keeping it clean. Lubrication Improvement: Enhances the oil's ability to lubricate moving parts, reducing friction and wear. Performance Optimization: Improves overall engine performance by ensuring smoother operation. Compatibility: Usually safe for use with various types of engine oils and vehicles, though specifics should be checked on the product label. How to Use: Read the Label: Always follow the manufacturer's instructions provided on the product. Warm Up the Engine: Run the engine to bring it to normal operating temperature. Add Treatment: Pour the treatment directly into the oil system, either during an oil change or as specified by the product. Drive Normally: Let the product circulate through the engine to clean and enhance the system. *Due to regulation clarity we will transitioning to plastic bottles with the same unbeatable carbon dissolving formula!

Review: First-hand evidence proves product very effectively cleans carbon build-up internal of your engine
Review: 150,000 miles - this product helped me!

## Features

- Sticking piston rings
- Sticking lifters
- Sticking camshaft phasers
- Sticking oil control valve
- Sticking timing chain tensioner
- Restricted lubricating screens

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CYXTJ8P6 |
| Best Sellers Rank | #79,640 in Automotive ( See Top 100 in Automotive ) #319 in Oil & Fluid Additives |
| Brand | ATS Chemical |
| Customer Reviews | 4.7 4.7 out of 5 stars (344) |
| Date First Available | 30 March 2024 |
| Item Weight | 318 g |
| Item model number | DSI1040 |
| Manufacturer | ATS Chemical |
| Manufacturer Part Number | 1040 |
| Model | 505CRO |
| Product Dimensions | 15.24 x 5.59 x 5.59 cm; 317.51 g |

## Images

![ATS Chemical 505 CRO Oil System Treatment - 12 oz Engine Oil Additive - Cleans Sludge, Reduces Emissions, Quiet Smooth Idle & Restores Performance in High-Mileage Gas & Diesel Engines - Image 1](https://m.media-amazon.com/images/I/61nqOcAbPFL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ First-hand evidence proves product very effectively cleans carbon build-up internal of your engine
*by B***. on 4 February 2025*



### ⭐⭐⭐⭐⭐ 150,000 miles - this product helped me!
*by P***L on 4 December 2025*



### ⭐⭐⭐⭐⭐ Arrived in a timely manner
*by D***. on 11 March 2026*



## Frequently Bought Together

- ATS Chemical 505 CRO Oil System Treatment (505 CRO Oil System Treatment 12 FL OZ)
- ATS Chemical 505 CRF Fuel System Treatment, 16 fluid ounces
- ATP Automotive AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-04-23*