---
product_id: 9408228
title: "Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (4 Pack)"
brand: "red line"
price: "R2015"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Red Line"
url: https://www.desertcart.co.za/products/9408228-red-line-60103-si-1-complete-fuel-system-cleaner-cleans
store_origin: ZA
region: South Africa
---

# Boosts fuel efficiency & stability Cleans fuel injectors & carburetors Prevents corrosion in fuel system Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (4 Pack)

**Brand:** red line
**Price:** R2015
**Availability:** ✅ In Stock

## Summary

> ⛽ Drive cleaner, run smoother — don’t let your engine miss out!

## Quick Answers

- **What is this?** Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (4 Pack) by red line
- **How much does it cost?** R2015 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/9408228-red-line-60103-si-1-complete-fuel-system-cleaner-cleans)

## Best For

- red line enthusiasts

## Why This Product

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

## Key Features

- • **One-Tank Wonder:** Just one bottle per tank delivers nearly 100% cleaning efficiency
- • **Corrosion Defense:** Advanced additives protect fuel system components from rust and wear
- • **Trusted Pro Choice:** Top-ranked cleaner with a 4.7-star rating and proven results across vehicle types
- • **Fuel Efficiency Booster:** Enhances gasoline stability, reducing gum and varnish buildup
- • **Precision Cleaning Power:** High-PEA formula dissolves stubborn deposits for peak engine performance

## Overview

Red Line 60103 SI-1 is a premium 15-ounce fuel system cleaner (4-pack) designed to clean injectors, carburetors, valves, and combustion chambers while preventing corrosion. Its high concentration of PEA detergent ensures nearly complete cleaning in one treatment, improving fuel stability and engine performance. Trusted by professionals and highly rated by users, it’s the go-to additive for maintaining a smooth, efficient ride.

## Description

Product description SI-1 FUEL SYSTEM CLEANER - 15OZ Cleans injectors, carburetors, valve and combustion chamber deposits with a concentrated blend of the most powerful high-temp and low-temp detergents available Cleans all forms of fuel injectors, including GDI Enhances fuel stability; reduces gum and varnish formation Use one bottle per tank for most effective treatment, cleans to nearly 100% efficiency in one treatment Reduces need for octane by up to two points Contains synthetic upper cylinder lubricant Cleans pollution control valves Suitable for use with oxygenated fuel Safe for continual use

Review: Phenomenal Cleaner With High PEA % - Does the job and seemed to help my engine run smoother. I also like that it has a high PEA content, which is one of the main ingredients I look for in a quality fuel system cleaner. It’s easy to use and feels more legitimate than a lot of cheaper fuel additives. The only downside is that it is a little pricey, but overall I’d still recommend it if you want a solid fuel system cleaner.
Review: Great performance and highly effective - I noticed a significant improvement in engine smoothness and fuel efficiency after using Red Line SI-1. It is a 100% perfect product and worth every penny. I highly recommend it to anyone looking to maintain their fuel system

## Features

- DESIGNED TO EXCEED EXPECTATIONS: Red Line complete SI-1 fuel system cleaner treatment for cleaning and preventing corrosion in fuel systems
- PERFORM AND PROTECT: Fuel additive cleans injectors, carburetors, valve and combustion chamber deposits with a powerful, concentrated blend of high-temp and low-temp detergents
- EFFICIENT FUEL BURN: Gas treatment that enhances gasoline stability, while reducing the build up of gum and varnish formation
- EASY TO USE: Use one bottle per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment
- 15 Ounce (4 Pack)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NQB6O0A |
| Best Sellers Rank | #108 in Automotive ( See Top 100 in Automotive ) #1 in Fuel System Cleaners |
| Brand | Red Line |
| Brand Name | Red Line |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.8 out of 5 stars 9,195 Reviews |
| Included Components | Fuel System Cleaner |
| Item Form | Liquid |
| Item Type Name | Fuel System Cleaner |
| Item Volume | 425 Milliliters |
| Item Weight | 3.9 Pounds |
| Manufacturer | Red Line |
| Material Feature | Unscented |
| Material Features | Unscented |
| Model Number | 60103 |
| Number of Items | 4 |
| Part Number | 60103-4- |
| Scent | Unscented |
| Size | 15 Fl oz (Pack of 4) |
| Special Features | Reduces need for octane by up to two points |
| Specific Uses For Product | Fuel System Cleaner |
| UPC | 737534816455 |
| Unit Count | 60.0 Fluid Ounces |

## Product Details

- **Brand:** Red Line
- **Item Form:** Liquid
- **Material Feature:** Unscented
- **Scent:** Unscented
- **Specific Uses For Product:** Fuel System Cleaner

## Images

![Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (4 Pack) - Image 1](https://m.media-amazon.com/images/I/71PWCfm-XDL.jpg)
![Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (4 Pack) - Image 2](https://m.media-amazon.com/images/I/817ezF6r+vL.jpg)
![Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (4 Pack) - Image 3](https://m.media-amazon.com/images/I/81g6HasOm9L.jpg)
![Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (4 Pack) - Image 4](https://m.media-amazon.com/images/I/81DXSFNDdkL.jpg)
![Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (4 Pack) - Image 5](https://m.media-amazon.com/images/I/81lgAaNzDnL.jpg)

## Available Options

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

## Questions & Answers

**Q: Do you need to change your oil after using this through a full tank of gas?**
A: No need to change oil.  This is a fuel additive that cleans fuel injectors to better mileage.  Does work.

**Q: Is this ok as y to use with diesel engines?**
A: NO....use the one for diesel (Red Line 85 Plus Diesel Fuel Additive (12 oz.) (Quantity 1)) It is also available on Amazon in several qtys.

**Q: does this also help clean the catalytic converter?**
A: Maybe it cleans fuel system and injectors.
Help clean the CAT? Sorry, I can't answer that question.

**Q: Has anyone tried using this as for an engine flush? What were the results?**
A: No, and why use it as an engine flush? This product was formulated and meant to be used as a fuel system cleaner and it's an effective one, at least in my case.  I've been using in the past 4 years on 3 different vehicles. Best results you'll really notice is using it every 15-20k. Using it more frequently is just a waste. Now, going back to engine flush question, I've used BG EPR.  I used it on my wife's 2010 CRV with 150k and0

## Customer Reviews

### ⭐⭐⭐⭐⭐ Phenomenal Cleaner With High PEA %
*by B***U on April 29, 2026*

Does the job and seemed to help my engine run smoother. I also like that it has a high PEA content, which is one of the main ingredients I look for in a quality fuel system cleaner. It’s easy to use and feels more legitimate than a lot of cheaper fuel additives. The only downside is that it is a little pricey, but overall I’d still recommend it if you want a solid fuel system cleaner.

### ⭐⭐⭐⭐⭐ Great performance and highly effective
*by A***D on May 5, 2026*

I noticed a significant improvement in engine smoothness and fuel efficiency after using Red Line SI-1. It is a 100% perfect product and worth every penny. I highly recommend it to anyone looking to maintain their fuel system

### ⭐⭐⭐⭐⭐ The best FI cleaner available in a bottle.
*by G***X on April 17, 2026*

This has been the best fuel injector cleaner for me compared to all the others I’ve used. This cleaner uses Polyetheramine (PEA). PEA is a nitrogen-based detergent that is widely considered the "gold standard" in the industry because it is thermally stable. Unlike cheaper detergents (like PIB or polyisobutylene), PEA does not break down at the high temperatures found in the combustion chamber, allowing it to effectively remove carbon deposits from fuel injectors, intake valves, and the combustion chamber itself. Also, out of all the over the counter FI cleaners, Redline has the highest concentration. Red Line SI-1 generally contains between 30% and 40% PEA by weight. Chevron Techron Concentrate Plus: Typically contains 20% to 30% PEA. Gumout Regane High Mileage: Usually sits in the 10% to 25% PEA range. This product is expensive, but I wouldn’t use anything else.

## Frequently Bought Together

- Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce (4 Pack)
- Liqui Moly Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2037
- Liqui Moly 2030 Pro-Line Gasoline System Cleaner, 500 ml, 16.91 Fl Oz (Pack of 1)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-06-03*