---
product_id: 13219571
title: "High Mileage 4 6 8 Compression Repair"
brand: "bar's leaks"
price: "AR$42961"
currency: ARS
in_stock: null
reviews_count: 13
category: "Bar's Leaks"
url: https://www.desertcart.com.ar/products/13219571-high-mileage-4-6-8-compression-repair
store_origin: AR
region: Argentina
---

# Helps pass emissions tests Stabilizes engine compression Repairs worn piston rings & cylinder walls High Mileage 4 6 8 Compression Repair

**Brand:** bar's leaks
**Price:** AR$42961
**Availability:** ❌ Out of Stock

## Summary

> ⚡️ Unlock hidden engine power and drive with confidence!

## Quick Answers

- **What is this?** High Mileage 4 6 8 Compression Repair by bar's leaks
- **How much does it cost?** AR$42961 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/13219571-high-mileage-4-6-8-compression-repair)

## Best For

- bar's leaks enthusiasts

## Why This Product

- Trusted bar's leaks brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Eco-Friendly Engine Care:** No harmful metals—safe for your engine and the environment while aiding emissions compliance.
- • **Power Up Without the Hassle:** Restores lost horsepower and reduces engine blow-by for peak performance.
- • **Seal the Deal on Engine Wear:** Fills scratches and grooves to renew worn piston rings and cylinder walls.
- • **Universal Fit for Every Ride:** Works seamlessly on gasoline and diesel engines across cars, trucks, motorcycles, and ATVs.
- • **Revive Your Engine's Heartbeat:** Boost and stabilize compression for smoother, more powerful rides.

## Overview

Rislone 4447 High Mileage Compression Repair with Ring Seal is a premium polymer formula designed to restore and stabilize compression in high-mileage engines. By filling scratches and grooves in piston rings and cylinder walls, it renews engine performance, reduces blow-by, and helps vehicles pass emissions tests. Compatible with gasoline and diesel engines, this additive is a must-have for maintaining power and efficiency in worn engines without harmful metals.

## Description

Rislone High Mileage Compression Repair with Ring Seal is a concentrated proprietary blend of high-shear and premium polymers developed for higher mileage engines that are suffering from decreased or uneven compression. Low compression can be caused by normal engine wear and decreased sealing between the piston rings and cylinder walls. The non-dispersant olefin copolymers fill scratches & grooves in cylinder walls to increase and stabilize compression in all cylinders. Compression Repair renews worn engines, rebuilds compression, restores lost power and repairs engine blow-by. In addition, Compression Repair helps vehicles pass emission tests. Some signs of decreased compression include loss of power, poor fuel mileage, oil consumption, blue smoke from exhaust, plug fouling and engine noise or vibration. The Viscosity Improver (VI) is designed specifically to provide an optimum balance of shear stability and thickening efficiency required in old and modern engines. This performance additive meets the most severe passenger car and truck engine requirements. Product works by freeing sticky rings and filling gaps & scratches in cylinder walls, eliminating blow-by and compression loss while also reducing friction and wear. Blow-by is usually caused by gaps in internal engine parts resulting from excess wear. Rislone Compression Repair with Ring Seal does not contain any harmful lead or other metals that could damage the inside of your engine or be burned and contaminate emissions components and the environment. Works on gasoline and diesel engines with conventional, high mileage and synthetic engine oils.

Review: UNBELIEVABLE- It really works. Restored a 34 year old engine. - I have a 1989 boat. The engine is the Mercruiser 4-cylinder Alpha One. The engines were actually made by General Motors. They were used in Chevys, and they adapted them for marine use by putting their own intake manifolds and exhaust manifolds on them. I would note that marine engines have a hard life. They are frequently run wide open at 4,000 RPMs for long periods of time, causing more wear than the same engine in a car would experience. So, my engine was 34 years old and very tired. Starting was unreliable. It would crank and crank until it would catch, and then I had to keep the rpms at about 3,000 for a while or it would die. You could tell one cylinder was not firing- maybe two because of the lumpy running and engine shaking. Idling was out of the question for at least 5 minutes. If other people were at the boat ramp I felt embarrassed because of all the blue smoke my boat made. I decided to add one container of this product to my oil to see what would happen. The first four times I started the engine, there was no change. About the fifth time, I noticed it was running more smoothly. Then, after about a month, I accidentally started the engine without giving it any throttle- I just turned the key. It started right away (miracle #1) AND idled smoothly at 700RPM (miracle #2). I could not believe it! I turned it off and started it again, and the same thing happened. Since then, it has done this every time. No blue smoke, no engine shaking, engine starts immediately and idles smoothly. That's my story. I don't know what they put into this product, but whatever it is it actually works. It restored my balky, high-mileage engine so it now starts and purrs like a baby. I would highly recommend this product, and that's an understatement.
Review: Brought the piston rings back around! - Give this a try before replacing piston rings. I have an old and tired Tecumseh flathead that ran okay for its age but smoked a lot and blew oil out the breather tube. I used the Rislone as directed and it made a huge improvement. Don’t expect immediate results, as piston rings can take some time to come back around. Engine still smokes a bit under load, but consumes oil far less and runs well. I’ll have to do a rebuild eventually, but I rely on my machines and can’t afford that much down time. Highly recommend!

## Features

- INCREASE AND STABILIZE COMPRESSION: Rislone High Mileage Compression Repair with Ring Seal is a concentrated proprietary blend of high-shear and premium polymers developed for higher mileage engines that are suffering from decreased or uneven compression.
- RENEWS WORN ENGINES: Low compression can be caused by normal engine wear and decreased sealing between the piston rings and cylinder walls.
- RESTORES LOST POWER: The non-dispersant olefin copolymers fill scratches & grooves in cylinder walls to increase and stabilize compression in all cylinders.
- REPAIRS ENGINE BLOW-BY: Compression Repair renews worn engines, rebuilds compression, restores lost power and repairs engine blow-by. In addition, Compression Repair helps vehicles pass emission tests.
- MADE IN THE USA: Use on any gasoline or diesel engine

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CGRX6RE |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #9,112 in Automotive ( See Top 100 in Automotive ) #24 in Engine & Oil Fluid Additives |
| Brand | Bar's Leaks |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,878) |
| Date First Available | April 22, 2013 |
| Global Trade Identification Number | 00078615044474 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5.6 ounces |
| Item model number | 4447 |
| Manufacturer | Rislone |
| Manufacturer Part Number | 4447 |
| Model | 4447 |
| Product Dimensions | 2.6 x 2.6 x 7.4 inches |
| Size | Pack of 1 |
| UPC | 078615044474 078615444472 |
| Vehicle Service Type | Car, Truck, Motorcycle, ATV, etc. |

## Product Details

- **Brand:** Bar's Leaks
- **Liquid Volume:** 16.5 Fluid Ounces
- **Package Information:** Bottle
- **UPC:** 078615044474 078615444472
- **Vehicle Service Type:** Car, Truck, Motorcycle, ATV, etc.

## Images

![High Mileage 4 6 8 Compression Repair - Image 1](https://m.media-amazon.com/images/I/61we3oHoC9L.jpg)
![High Mileage 4 6 8 Compression Repair - Image 2](https://m.media-amazon.com/images/I/7120ozphyOL.jpg)
![High Mileage 4 6 8 Compression Repair - Image 3](https://m.media-amazon.com/images/I/71IutJQdUcL.jpg)

## Questions & Answers

**Q: Can you use this product and the anti-friction product at the same time?**
A: Hello, and thank you for your question. We appreciate you considering Rislone for your automotive needs. Since you don't specify which anti-friction product you are asking about, it's difficult for us to give you a complete answer. What we can say is this: Rislone High Mileage Compression Repair (part number 4447) IS compatible with Rislone Nano Prime Engine & Oil Additive (part number 4104), which uses Nano Tungsten and Moly to reduce friction up to 38%. We have not tested the Compression Repair with products from other manufacturers, so we are not able to address possible compatibility concerns in that area.

We hope this satisfactorily answers your question. If you have any other questions or would like additional information on these or any of our products, please feel free to call our Tech Support Team at 1-800-345-6572. We are here to assist you Monday through Friday, from 8 am to 5 pm Eastern time.

**Q: Can i use (mix) this product if i am using xl nanolube engine oil additive & nano treatment; reduces oil burning & engine smoke**
A: Thank you for your question and for considering Rislone Compression Repair with Ring Seal (part number 4447) to help with your automotive needs. We cannot recommend these two products be mixed as we only have test data on compatibility within our own family of products. Since we don't test the efficacy or compatibility of our products alongside a competitors product, we can't advise you to use them together. We certainly appreciate your interest, but as a family run company for over 70 years, we pride ourselves on being honest with our customers - if we don't think we can help you, we will let you know, and in this case, we can't.

If you have any other questions or we may provide additional information, please feel free to contact our Tech Support team at 1-800-345-6572. We are here to assist you Monday through Friday, from 8 am to 5 pm Eastern time.

**Q: Do i put in every oil  chang or is it a 1 time and done**
A: Every oil change.  I have an 87 Toyota Corolla with 200k, it takes 3 at this point.  I have observed that it works after the first trip.  It has eliminated blue smoke and low oil pressure.  "Your mileage may vary".

**Q: Is it safe to use in engines with variable valve timing? Like a 1997 Honda Prelude**
A: Thank you for your question, and for considering Rislone to help with your Honda. When installed following instructions, Rislone Compression Repair with Ring Seal (part number 4447)  is safe to use in your Prelude.  It can be used in all 4, 5, 6, 8, and 10 cylinder gasoline or diesel engines, and can be used with conventional, high mileage, and synthetic engine oils. Do not overfill.

If you have any other questions, or would like any additional information, please feel free to call our Tech Support team at 1-800-345-6572. We are here to assist you Monday through Friday, from 8 am to 5 pm, Eastern time.

## Customer Reviews

### ⭐⭐⭐⭐⭐ UNBELIEVABLE- It really works. Restored a 34 year old engine.
*by A***R on July 6, 2025*

I have a 1989 boat. The engine is the Mercruiser 4-cylinder Alpha One. The engines were actually made by General Motors. They were used in Chevys, and they adapted them for marine use by putting their own intake manifolds and exhaust manifolds on them. I would note that marine engines have a hard life. They are frequently run wide open at 4,000 RPMs for long periods of time, causing more wear than the same engine in a car would experience. So, my engine was 34 years old and very tired. Starting was unreliable. It would crank and crank until it would catch, and then I had to keep the rpms at about 3,000 for a while or it would die. You could tell one cylinder was not firing- maybe two because of the lumpy running and engine shaking. Idling was out of the question for at least 5 minutes. If other people were at the boat ramp I felt embarrassed because of all the blue smoke my boat made. I decided to add one container of this product to my oil to see what would happen. The first four times I started the engine, there was no change. About the fifth time, I noticed it was running more smoothly. Then, after about a month, I accidentally started the engine without giving it any throttle- I just turned the key. It started right away (miracle #1) AND idled smoothly at 700RPM (miracle #2). I could not believe it! I turned it off and started it again, and the same thing happened. Since then, it has done this every time. No blue smoke, no engine shaking, engine starts immediately and idles smoothly. That's my story. I don't know what they put into this product, but whatever it is it actually works. It restored my balky, high-mileage engine so it now starts and purrs like a baby. I would highly recommend this product, and that's an understatement.

### ⭐⭐⭐⭐⭐ Brought the piston rings back around!
*by A***R on November 21, 2025*

Give this a try before replacing piston rings. I have an old and tired Tecumseh flathead that ran okay for its age but smoked a lot and blew oil out the breather tube. I used the Rislone as directed and it made a huge improvement. Don’t expect immediate results, as piston rings can take some time to come back around. Engine still smokes a bit under load, but consumes oil far less and runs well. I’ll have to do a rebuild eventually, but I rely on my machines and can’t afford that much down time. Highly recommend!

### ⭐⭐⭐⭐ Decent product
*by P***. on May 16, 2025*

It worked somewhat; I will definitely be using a 2nd bottle to see if it clears up more. Probably need 2 bottles for a 8 cylinder

## Frequently Bought Together

- Rislone High Mileage 4 6 8 Compression Repair, 16.9 oz.
- Bar's Leaks 1000 High Mileage Engine Repair, 16.9 oz | Restores Performance, Increases Compression & Horsepower, Stops Leaks, Noise & Smoking
- Bar's Leaks OS-1 Oil Seal Engine Oil Burning and Leak Repair, 16.9 oz.

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-01-22*