---
product_id: 619551641
title: "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: "₪293"
currency: ILS
in_stock: true
reviews_count: 7
category: "Ats Chemical"
url: https://www.desertcart.co.il/products/619551641-505-cro-oil-system-treatment-12-oz-engine-oil-additive
store_origin: IL
region: Israel
---

# Reduces harmful emissions Smooths idle noise Cleans sludge buildup 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:** ₪293
**Availability:** ✅ In Stock

## Summary

> ⚡ Unlock your engine’s hidden potential — drive smarter, cleaner, smoother!

## Quick Answers

- **What is this?** 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?** ₪293 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/619551641-505-cro-oil-system-treatment-12-oz-engine-oil-additive)

## 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

- • **Silence the Engine Noise:** Experience a quieter, smoother idle that signals peak engine health
- • **Emission-Friendly Formula:** Cuts down exhaust pollutants to keep your ride eco-conscious
- • **Combat Sticking Components:** Targets piston rings, lifters, cam phasers & timing chain tensioners for optimal flow
- • **Revive High-Mileage Engines:** Restores lost power and responsiveness for gas & diesel vehicles
- • **Fuel Economy Boost Potential:** Notice smoother acceleration and possible MPG gains that keep your wallet happy

## Overview

The 505 CRO Oil System Treatment is a premium 12 oz engine additive designed to clean sludge, reduce emissions, and restore performance in high-mileage gas and diesel engines. Trusted by thousands with a 4.6-star rating, it targets sticking engine components to improve smoothness, responsiveness, and potentially fuel economy, making it a must-have for professionals who demand peak vehicle performance and eco-conscious driving.

## Description

Buy 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: Fuel Additives - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Highly recommended - Expensive, but it's the one fuel treatment that produces noticeable effects. Increased fuel economy, smooth acceleration and idling.
Review: Works as intended. - How I used the product: I poured entire contents of bottle into a 2012 Toyota Camry Hybrid XLE. The car had roughly 12-13 gallons of gas when I used it. I drove mostly normally, but used engine braking to increase rpm downhill or whenever possible. It took roughly 1.5 weeks for the fuel containing 505 CRF to be used. Why I purchased the product: I mainly purchased the product as a way to fix what I felt like was throttle lag. The acceleration felt weak. Fuel economy was also a consideration on the value of this product to me. My concerns: I was skeptical of this product working due to my car being hybrid. Within the past 2 years I have also changed my Hybrid battery and noticed better fuel economy with that, but performance was still lacking in my opinion. What I experienced with CRF 505: At first, I didn't notice any changes. Not for several days driving. The car still felt "squishy" as it had been. Then somewhere between 1/2 and 1/4 it starting feeling much more responsive. The acceleration is smooth, fast, and stronger than ever. The car went from being a bit of a chore to drive to becoming fun. It feels much safer to have the car be responsive to my controls. Gas economy(full transparency): I am sure many people that get product's first concern is if this will generate enough value from the save fuel economy. I don't have enough data currently to be conclusive due to several factors such as: I haven't had fuel filter cleaned, I haven't driven a full tank of since using the product, I rely on the mpg avg display which can be off several percentage(even -/+ 5% is the difference between ~4mpg in a Camry), and driving style(due to difference in acceleration driving is slightly more "aggressive". My opinion(Should you use it): I am more than happy with my purchase. The product did what I wanted it to do. The performance improvement alone is enough Value for the Money for me, and any fuel economy is just a bonus. I believe that if I had used it on 5-7 gallons of gas it would have probably helped the fuel economy more than me using it on >12 gallons. The only reason I would have to not buy the product again: It worked correctly the first time! Follow up plan: My follow up plan is to follow this up with occasional fuel treatment using Marvel's Mystery oil, and to pay attention to my mpg to see if any changes.

## 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 | #3,148 in Automotive ( See Top 100 in Automotive ) #41 in Engine & Oil Fluid Additives |
| Brand | ATS Chemical |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,169) |
| Date First Available | March 24, 2024 |
| Item Weight | 11.2 ounces |
| Item model number | DSI1040 |
| Manufacturer | ATS Chemical |
| Manufacturer Part Number | 1040 |
| Model | 505CRO |
| Product Dimensions | 6 x 2.2 x 2.2 inches |

## Images

![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/71PbpIgd82L.jpg)
![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 2](https://m.media-amazon.com/images/I/71iFI2CfKNL.jpg)
![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 3](https://m.media-amazon.com/images/I/81I10glKC0L.jpg)
![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 4](https://m.media-amazon.com/images/I/718XLEUIE8L.jpg)
![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 5](https://m.media-amazon.com/images/I/81XOTXx5iLL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Highly recommended
*by B***E on February 9, 2026*

Expensive, but it's the one fuel treatment that produces noticeable effects. Increased fuel economy, smooth acceleration and idling.

### ⭐⭐⭐⭐⭐ Works as intended.
*by H***S on July 16, 2025*

How I used the product: I poured entire contents of bottle into a 2012 Toyota Camry Hybrid XLE. The car had roughly 12-13 gallons of gas when I used it. I drove mostly normally, but used engine braking to increase rpm downhill or whenever possible. It took roughly 1.5 weeks for the fuel containing 505 CRF to be used. Why I purchased the product: I mainly purchased the product as a way to fix what I felt like was throttle lag. The acceleration felt weak. Fuel economy was also a consideration on the value of this product to me. My concerns: I was skeptical of this product working due to my car being hybrid. Within the past 2 years I have also changed my Hybrid battery and noticed better fuel economy with that, but performance was still lacking in my opinion. What I experienced with CRF 505: At first, I didn't notice any changes. Not for several days driving. The car still felt "squishy" as it had been. Then somewhere between 1/2 and 1/4 it starting feeling much more responsive. The acceleration is smooth, fast, and stronger than ever. The car went from being a bit of a chore to drive to becoming fun. It feels much safer to have the car be responsive to my controls. Gas economy(full transparency): I am sure many people that get product's first concern is if this will generate enough value from the save fuel economy. I don't have enough data currently to be conclusive due to several factors such as: I haven't had fuel filter cleaned, I haven't driven a full tank of since using the product, I rely on the mpg avg display which can be off several percentage(even -/+ 5% is the difference between ~4mpg in a Camry), and driving style(due to difference in acceleration driving is slightly more "aggressive". My opinion(Should you use it): I am more than happy with my purchase. The product did what I wanted it to do. The performance improvement alone is enough Value for the Money for me, and any fuel economy is just a bonus. I believe that if I had used it on 5-7 gallons of gas it would have probably helped the fuel economy more than me using it on >12 gallons. The only reason I would have to not buy the product again: It worked correctly the first time! Follow up plan: My follow up plan is to follow this up with occasional fuel treatment using Marvel's Mystery oil, and to pay attention to my mpg to see if any changes.

### ⭐⭐⭐⭐⭐ Worth every penny
*by R***D on November 23, 2025*

Great product. My big Lincoln went from a normal 22mpg to 25mpg just from having 505 CRF clean the fuel injectors in one tank of driving. Highly recommend. No, it isn't cheap, but you'll more than make the cost back in better performance and better mpg.

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.il/products/619551641-505-cro-oil-system-treatment-12-oz-engine-oil-additive](https://www.desertcart.co.il/products/619551641-505-cro-oil-system-treatment-12-oz-engine-oil-additive)

---

*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-02-27*