Search  for anything...
Red Line

Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce (2 Pack)

    • Based on 1,750 reviews
Condition: New
Checking for product changes
$31.94 Why this price?
Holiday Deal · 36% off was $49.99

Buy Now, Pay Later

As low as $7 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Dec 24
Order within 10 hours and 47 minutes
Available payment plans shown during checkout

Size: 15 Ounce, (Pack of 2)


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)

Brand: Red Line


Item Form: Liquid


Scent: Unscented


Specific Uses For Product: Automotive Interior


Material Feature: Unscented


Is Discontinued By Manufacturer ‏ : ‎ No


Package Dimensions ‏ : ‎ 10.2 x 5.35 x 2.95 inches; 2 Pounds


Item model number ‏ : ‎ 5


Date First Available ‏ : ‎ September 19, 2014


Manufacturer ‏ : ‎ Red Line


Country of Origin ‏ : ‎ USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Dec 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • 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. ... show more
Reviewed in the United States on December 26, 2023 by Sean
    • Product works. Very good price. Easy to use with simple easy to follow instructions.
Used the product to help protect my fuel injection system on my car and improve gas mileage and car response.
Reviewed in the United States on December 31, 2023 by Kenneth
    • Excellent Product
Love the convenience and next day shipping. Thank you for caring my favorite product.
Reviewed in the United States on February 7, 2024 by Sean
    • Great Product, poor shipper
Does help and improve mileage as well as some performance. Would have given 5 stars but the sellers packaging is poor. One container seal broke open during shipment. Box was soaked on one side. Always received these sealed in a plastic bag.
Reviewed in the United States on March 8, 2023 by Аmazon Customer
    • You Will Love the Results
Used this in my 2020 Ford Edge and wife's 2017 Ford Escape. Noticed immediately the Escape began running smoother and performance greatly improved. My Edge picked up about 4 additional MPG and again performance greatly improved. I will be ordering this again.
Reviewed in the United States on January 20, 2024 by Doug Littman
    • Injection cleaner
One of the best on the market. Little more cost than royal purple injection cleaner. Which I used for years. I could tell a difference in a half tank of use. Well worth the extra expense. Be careful only a 2pk instead of 6pack.
Reviewed in the United States on December 21, 2023 by T
    • cleaner great
seems to work well
Reviewed in the United States on January 25, 2024 by Amazon Customer
    • Immediate MPG increase
I recently changed my spark plugs and battery as they were super old. My gas mileage changed a little bit. When I put this in and ran it through my car, I got an instant 10% increase in MPG. Now, for a car that gets almost 30 mpg in the city, I was really pleased. Strongly recommend this.
Reviewed in the United States on February 5, 2024 by Dietrichs

Can't find a product?

Find it on Amazon first, then paste the link below.