Red Line SI-1 Fuel System Cleaner - Universal
Red Line SI-1 Fuel System Cleaner - Universal
Red Line
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PRODUCT DETAILS ▾
RallySport Direct is proud to bring you some of the best lubricants and additives in the automotive industry brought to you by Red Line.
This is the Redline S1 Complete Fuel System Cleaner. This is a great formula that combines fuel injector cleaners and valve detergents that you should run through your fuel system every so often to clean out any potentially harmful or corrosive contaminants trapped within your fuel system. Additionally, it works hard to also clean your intake valves and combustion chambers to a nearly 100% efficiency in one treatment. And depending on the condition of the injectors, the cleansing effect on the injector deposits can raise the fuel economy by 12% or greater.
DETAILS:
- 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 the most effective treatment, cleans to nearly 100% efficiency in one treatment
- Reduces the 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
- Sold individually in a 15 FL OZ bottle
WHY WE CARRY THIS ▾
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT ▾
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
RallySport Direct is proud to bring you some of the best lubricants and additives in the automotive industry brought to you by Red Line.
This is the Redline S1 Complete Fuel System Cleaner. This is a great formula that combines fuel injector cleaners and valve detergents that you should run through your fuel system every so often to clean out any potentially harmful or corrosive contaminants trapped within your fuel system. Additionally, it works hard to also clean your intake valves and combustion chambers to a nearly 100% efficiency in one treatment. And depending on the condition of the injectors, the cleansing effect on the injector deposits can raise the fuel economy by 12% or greater.
DETAILS:
- 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 the most effective treatment, cleans to nearly 100% efficiency in one treatment
- Reduces the 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
- Sold individually in a 15 FL OZ bottle
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