---
product_id: 9408229
title: "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: "฿3833"
currency: THB
in_stock: true
reviews_count: 9
category: "Red Line"
url: https://www.desertcart.co.th/products/9408229-60103-si-1-complete-fuel-system-cleaner-cleans-and-prevents
store_origin: TH
region: Thailand
---

# 15 oz x2 concentrated fuel cleaner Cleans injectors, valves & combustion chambers Prevents corrosion & deposits 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:** ฿3833
**Availability:** ✅ In Stock

## Summary

> ⛽ Clean fuel, smooth drive, zero regrets.

## Quick Answers

- **What is this?** 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?** ฿3833 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/9408229-60103-si-1-complete-fuel-system-cleaner-cleans-and-prevents)

## 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

- • **Dual-Pack Efficiency:** Two 15-ounce bottles deliver nearly 100% cleaning efficiency in just one tank treatment—maximize value and results.
- • **Smooth Ride Guarantee:** Experience smoother idling, improved throttle response, and optimized fuel burn with every use.
- • **Corrosion Defense Shield:** Advanced additives protect your fuel system from rust and corrosion, extending engine life and reliability.
- • **Ultimate Fuel System Detox:** Powerful PEA formula dissolves stubborn gum, varnish & ethanol residues for peak engine performance.
- • **Effortless Maintenance Ritual:** Simply add one bottle per tank—no mess, no hassle, just professional-grade fuel system care.

## Overview

Red Line 60103 SI-1 is a premium, concentrated fuel system cleaner designed to clean injectors, carburetors, valves, and combustion chambers while preventing corrosion. Each 15-ounce bottle delivers nearly 100% cleaning efficiency per tank, improving fuel stability and engine performance. Trusted by automotive pros and enthusiasts alike, this dual-pack formula uses a high concentration of PEA detergent to dissolve deposits and ethanol buildup, ensuring smoother rides and longer engine life.

## 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: Revitalize Your Ride: Red Line 60103 SI-1 Fuel System Cleaner - The Red Line 60103 SI-1 Complete Fuel System Cleaner is a true game-changer when it comes to optimizing engine performance and fuel efficiency. This automotive marvel has proven itself to be an essential tool for anyone seeking to revitalize their vehicle's fuel system and unlock the full potential of their engine. One of the standout features of the Red Line 60103 SI-1 is its remarkable effectiveness in cleaning and maintaining the entire fuel system. Whether you drive a high-performance sports car or a daily commuter, this cleaner is designed to break down carbon deposits, varnish, and other contaminants that can hinder engine efficiency. The result is a smoother-running engine with improved fuel combustion, leading to enhanced power and responsiveness. The ease of use is another commendable aspect of this fuel system cleaner. With a simple pour-and-go application, it's incredibly user-friendly. Whether you're a seasoned car enthusiast or a DIY novice, the straightforward instructions make the process hassle-free. The cleaner is compatible with various fuel types, including gasoline, diesel, and ethanol blends, making it versatile for a wide range of vehicles. One of the most impressive outcomes of using Red Line's SI-1 is the noticeable improvement in fuel efficiency. Many users report an increase in miles per gallon (MPG) after incorporating this cleaner into their regular maintenance routine. This not only translates to potential cost savings at the pump but also contributes to a more environmentally friendly driving experience. The formulation of the Red Line 60103 SI-1 is noteworthy for its attention to detail. The proprietary blend of powerful detergents and cleaning agents is designed to provide thorough and effective cleaning without causing harm to fuel system components. This focus on both performance and engine safety sets Red Line apart as a trusted name in automotive care. Long-term engine health is a priority for any vehicle owner, and the SI-1 Fuel System Cleaner excels in this aspect. The cleaner's ability to prevent the formation of deposits and maintain fuel system cleanliness over time contributes to the longevity of critical engine components. Users appreciate the peace of mind that comes with knowing they are proactively caring for their vehicle's heart. In conclusion, the Red Line 60103 SI-1 Complete Fuel System Cleaner is a must-have for anyone seeking peak performance from their vehicle. Its effectiveness, ease of use, and positive impact on fuel efficiency make it a standout product in the automotive care market. Give your ride the care it deserves and let Red Line's SI-1 fuel system cleaner be the secret weapon that revitalizes your engine's performance and keeps it running smoothly for the long haul.
Review: The best FI cleaner available in a bottle. - 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.

## 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 | #86 in Automotive ( See Top 100 in Automotive ) #1 in Fuel System Cleaners |
| Brand Name | Red Line |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.7 4.7 out of 5 stars (8,846) |
| Included Components | Fuel System Cleaner |
| Item Form | Liquid |
| Item Type Name | Fuel System Cleaner |
| Item Volume | 15 Fluid Ounces |
| Manufacturer | Red Line |
| Material Features | Unscented |
| Model Number | 5 |
| Number of Items | 2 |
| Part Number | 60103 |
| Scent | Unscented |
| Size | 15 Fl Oz (Pack of 2) |
| 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

![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

### ⭐⭐⭐⭐⭐ Revitalize Your Ride: Red Line 60103 SI-1 Fuel System Cleaner
*by S***N on December 26, 2023*

The Red Line 60103 SI-1 Complete Fuel System Cleaner is a true game-changer when it comes to optimizing engine performance and fuel efficiency. This automotive marvel has proven itself to be an essential tool for anyone seeking to revitalize their vehicle's fuel system and unlock the full potential of their engine. One of the standout features of the Red Line 60103 SI-1 is its remarkable effectiveness in cleaning and maintaining the entire fuel system. Whether you drive a high-performance sports car or a daily commuter, this cleaner is designed to break down carbon deposits, varnish, and other contaminants that can hinder engine efficiency. The result is a smoother-running engine with improved fuel combustion, leading to enhanced power and responsiveness. The ease of use is another commendable aspect of this fuel system cleaner. With a simple pour-and-go application, it's incredibly user-friendly. Whether you're a seasoned car enthusiast or a DIY novice, the straightforward instructions make the process hassle-free. The cleaner is compatible with various fuel types, including gasoline, diesel, and ethanol blends, making it versatile for a wide range of vehicles. One of the most impressive outcomes of using Red Line's SI-1 is the noticeable improvement in fuel efficiency. Many users report an increase in miles per gallon (MPG) after incorporating this cleaner into their regular maintenance routine. This not only translates to potential cost savings at the pump but also contributes to a more environmentally friendly driving experience. The formulation of the Red Line 60103 SI-1 is noteworthy for its attention to detail. The proprietary blend of powerful detergents and cleaning agents is designed to provide thorough and effective cleaning without causing harm to fuel system components. This focus on both performance and engine safety sets Red Line apart as a trusted name in automotive care. Long-term engine health is a priority for any vehicle owner, and the SI-1 Fuel System Cleaner excels in this aspect. The cleaner's ability to prevent the formation of deposits and maintain fuel system cleanliness over time contributes to the longevity of critical engine components. Users appreciate the peace of mind that comes with knowing they are proactively caring for their vehicle's heart. In conclusion, the Red Line 60103 SI-1 Complete Fuel System Cleaner is a must-have for anyone seeking peak performance from their vehicle. Its effectiveness, ease of use, and positive impact on fuel efficiency make it a standout product in the automotive care market. Give your ride the care it deserves and let Red Line's SI-1 fuel system cleaner be the secret weapon that revitalizes your engine's performance and keeps it running smoothly for the long haul.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ 45% Better Gas Mileage
*by C***R on September 3, 2018*

Summary: Red Line Complete SI-1 Fuel System Cleaner does what it claims to do. I can report two major improvements in performance, one objective and one a bit subjective. Objective improvement: 45% better gas mileage. Subjective improvement: No longer stalls going up the dreaded hill. This may be partly due to my improved skill with clutch and throttle, but I credit at least part of it to the Red Line Complete treatment. Caveat: Perhaps I am a bit generous with my “informed consumer” filters. One of the claims on the package is, “Regain lost horsepower.” Apply that filter to all of the claims. If your vehicle is performing anywhere near the manufacturer's stated performance, no, this product will not improve it. But if your vehicle is performing poorly in comparison to the manufacturer's statements, and you have any reason to suspect that it is suffering from fuel system fouling, this product might make it better, and the purchase price is a good bet. If you use this product and do not see significant improvement, you have some other problem, and you haven't lost much. If you use this product and see the improvement you want, that's a win. Details: The vehicle: I bought my daughter's disused 2005 Suzuki DS500F that had been sitting in her basement for two years, the engine only having been run briefly once a month or so to make sure it was still in running condition. I installed a new battery changed the oil and oil filter, and inflated the tires. That's it. Initial performance was horrible. After burning out the old gasoline and establishing a new baseline for mpg measurement, I got 43.6 mpg, averaged over three tankfulls, compared to the manufacturer's rating of 56.3 mpg (and some reviewers' seemingly preposterous claims of 65 mpg), and I could not climb the on-ramp from Spit Brook Road eastbound onto the Everett Turnpike northbound without stalling two or three times. Treatment: The bottle says to use the full bottle in 20 gallons of gasoline. My 4.5 gallon tank should only take about a quarter of the bottle. Conveniently, there is a notch in the label to show you the half-bottle point, which should be about right for most contemporary cars. I had to eyeball a quarter of a bottle. (I put a half-bottle in my wife's Ford Escape, but we have not been measuring its performance. Saving the remaining quarter bottle for a follow-up treatment in the bike, but it looks like it won't be needed.) I hoped to see some improvement in my first tank _after_ the treatment. In fact, I saw measurable improvement in the tank in which I used the Red Line Complete (51 mpg). (Shortly after the treatment, my speedometer broke – twice – so I had to reestablish my mpg baseline about four tanks after the treatment.) In the past five tanks after the treatment (and after the second fix to the speedometer), I am averaging 63.1 mpg. Yes, borderline preposterous, but that's why I'm using an average. The best single tank was 69.4 mpg but, OK, I could have overfilled a little on the previous tank and underfilled a little on the subsequent tank, but such errors should smooth out in the average, and it's 63.1 mpg over five tanks. Most of my driving is under highway conditions or nearly so. My daily commute is about 200 feet of city streets, three miles of limited-access highway, and two miles of 45 mph secondary roads, and the reverse for the trip home. My weekend excursions are about 20 mile round trips on secondary roads, and the occasional 260 mile round trip to the White Mountains, mostly on limited-access highways (where I got the 69.4 mpg). Not much city driving. And now I can make that left turn from a stop up a 6% grade with the engine still a little cool without stalling. That may be partly because I've gotten better with the clutch and throttle, but I think it's at least partly because of the Red Line Complete Fuel System Cleaner. I am well pleased with the product, and beyond pleased with the bike.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-29*