---
product_id: 9408229
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 (2 Pack)"
brand: "red line"
price: "€ 80.66"
currency: EUR
in_stock: true
reviews_count: 8
category: "Red Line"
url: https://www.desertcart.sk/products/9408229-red-line-60103-si-1-complete-fuel-system-cleaner-cleans
store_origin: SK
region: Slovakia
---

# Boosts fuel efficiency & engine power Cleans fuel injectors & carburetors Prevents corrosion in fuel systems 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 (2 Pack)

**Brand:** red line
**Price:** € 80.66
**Availability:** ✅ In Stock

## Summary

> ⛽ Power up your ride with every drop!

## 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 (2 Pack) by red line
- **How much does it cost?** € 80.66 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/9408229-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

- • **Trusted by Pros:** Top-ranked and mechanic-recommended cleaner with 4.7-star rating from over 8,400 users.
- • **Corrosion Shield:** Advanced formula protects your fuel system from rust and wear, extending engine life.
- • **One-Tank Power-Up:** Just one bottle per tank delivers nearly 100% cleaning efficiency in a single treatment.
- • **Precision Engine Detox:** Eliminates deposits from injectors, valves, and combustion chambers for peak performance.
- • **Fuel Efficiency Booster:** Enhances gasoline stability to reduce gum and varnish buildup, saving you money at the pump.

## Overview

Red Line 60103 SI-1 is a concentrated, unscented fuel system cleaner designed to clean and protect injectors, carburetors, valves, and combustion chambers. This 15-ounce 2-pack treatment prevents corrosion, enhances fuel stability, and improves engine performance, making it a top-rated choice (#2 in Fuel System Cleaners) trusted by mechanics and millions of drivers.

## Description

Buy 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 (2 Pack) on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Best fuel injector cleaner on the market - Works very well! Recommended by number of mechanics that did a study! I can tell it cleaned out my injectors, getting more power and better gas mileage!
Review: Great product - I did a little ‘research ’ on fuel additives and which was were best and as advertised. Red Line always came out on top. The chemicals used to clean the fuel system and top end of the engine are very effective. There are some others that are very effective but this led the group. I haven’t had the chance to compare fuel consumption yet but the pickup and idle seems to have improved.

## 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 (2 Pack)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NQB7OM2 |
| Best Sellers Rank | #240 in Automotive ( See Top 100 in Automotive ) #2 in Fuel System Cleaners |
| Brand | Red Line |
| Brand Name | Red Line |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.7 out of 5 stars 8,492 Reviews |
| Included Components | Fuel System Cleaner |
| Item Form | Liquid |
| Item Type Name | Fuel System Cleaner |
| Item Volume | 15 Fluid Ounces |
| Manufacturer | Red Line |
| Material Feature | Unscented |
| Material Features | Unscented |
| Number of Items | 2 |
| Scent | Unscented |
| Special Features | Concentrated |
| Specific Uses For Product | Fuel System Cleaner |
| UPC | 737534816462 |
| Unit Count | 30.0 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 (2 Pack) - Image 1](https://m.media-amazon.com/images/I/612KJnNqPTL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can u detail the procedure how to use this product?**
A: Hold bottle in left hand. with right hand, twist cap counter clockwise. Break foil seal on bottle. (if you smoke, put the cigarette out before proceeding further)open gas tank door. remove gas cap (place in a location you remember to reinstall later.)Pour contents into gas tank. Replace gas cap. Drive as normal and it will clean injectors up as you drive. Enjoy a beer (AFTER you drive with enough time in between to sober up.)Call the fellas up and stand around drinking beer while admiring a fine product from Redline. (PEA is the main thing you want to clean things up, which Redline and Techron have the most)//I hope that is detailed enough\\

**Q: Is this product better than the much cheaper STP fuel cleaner**
A: if you buy cheap gas, you might need it.  i get top tier fuel and never had the need for this.  i tried it on a  twice for a 17 y/o honda odyssey.  did nothing. i always use top tier fuel.  also honda V6 is a great motor, as is there 4 cyl so maybe no need for this unless you use cheap gas or have a man engine prone to injector issues

**Q: Will this Redline product damage my 02 sensors with LONG TERM use?  No one seems to address this issue.**
A: Actually, notably, I put this product in a 1997 Toyota Camry a few years ago. The car was over 20 years old and had only had basic crap gasoline (not Top Tier and no fuel system cleaners) in it for its entire life. A few days after I added it, the check engine light DID come on and it WAS a broken O2 sensor. However, I'll do it again in a heartbeat, because a new O2 sensor was $13 and took 10 minutes to replace. So it seems it is possible that using this with an extremely crusty vehicle will cause an O2 sensor error/failure. But with long term use, certainly not. I have been using this in my 2016 Mazda 3 several times a year for 5+ years and it is running like the day I got it.

**Q: diesel engine, LPG engine all use??**
A: Definitely do NOT add this to a diesel or LPG fuel tank or anything else that isn't normal gasoline. However, as someone else said, they do make one for diesel engines. It is Red Line 60302.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best fuel injector cleaner on the market
*by J***. on February 16, 2026*

Works very well! Recommended by number of mechanics that did a study! I can tell it cleaned out my injectors, getting more power and better gas mileage!

### ⭐⭐⭐⭐⭐ Great product
*by R***S on January 29, 2026*

I did a little ‘research ’ on fuel additives and which was were best and as advertised. Red Line always came out on top. The chemicals used to clean the fuel system and top end of the engine are very effective. There are some others that are very effective but this led the group. I haven’t had the chance to compare fuel consumption yet but the pickup and idle seems to have improved.

### ⭐⭐⭐⭐⭐ Good stuff.
*by N***N on February 20, 2026*

I’ve run just about every type of injection cleaner there is, and this one works the best for me. I ran two bottles through my 120.000 mile Tacoma back to back; and the engine accelerates noticeably smoother now. I plan to run one through my tank at every oil change from now on.

## Frequently Bought Together

- Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce (2 Pack)
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**Shop now:** [https://www.desertcart.sk/products/9408229-red-line-60103-si-1-complete-fuel-system-cleaner-cleans](https://www.desertcart.sk/products/9408229-red-line-60103-si-1-complete-fuel-system-cleaner-cleans)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-08*