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Red Line Synthetic Oil Si-1 ISN25398 Fuel System Cleaner Automotive Additive, 15 Ounce (12 Pack)
Key item features
- Effective Cleaning: This automotive additive effectively cleans fuel injectors, carburetors, valves, and combustion chamber deposits using a concentrated blend of high-temp and low-temp detergents.
- Octane Reduction: The cleaner reduces the need for octane by up to two points, contributing to improved engine performance.
- Fuel System Protection: It protects the fuel system from rust and includes a synthetic upper cylinder lubricant for enhanced component longevity.
- Pollution Control: The additive cleans pollution control valves, aiding in maintaining emission system efficiency.
- Usage Versatility: One 15-ounce bottle treats up to 100 gallons for maintenance, or can be used per tank for neglected vehicles, and is safe for continual use with oxygenated fuel.
- Bulk Packaging: The product is supplied as a 12-pack of 15-ounce bottles, with a total package weight of 14.04 lbs.
Specs
- BrandRedline
- Rec. useAutomotive
- Volume capacity15 fl oz
- Container typeBottle
- Size12 Pack
- Vehicle fitment typeUniversal
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About this item
Product details
Clean your fuel system with Red Line SI-1 Complete Fuel System Cleaner. Cleans injectors, carburetors, valve and combustion chamber deposits with a concentrated blend of the most powerful high-temp and low-temp detergents available. 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. Use one bottle per tank for most effective treatment of neglected vehicles. Also use in smaller doses for maintenance as one bottle treats up to 100 gallons. Suitable for use with oxygenated fuel. Safe for continual use. Same chemistry is also available in 4oz dosage as Complete Fuel System Cleaner for Motorcycles.
Red Line Synthetic Oil Si-1 ISN25398 Fuel System Cleaner Automotive Additive, 15 Ounce (12 Pack)
- Effective fuel injector cleaner
- Cleans pollution control valve
- Reduces octane requirements
- Raises fuel economy
- Protects the fuel system from rust
- Weight: 14.04 lbs
Specifications
Brand
Automotive additive type
Rec. use
Volume capacity
Warranty
Warranty information
Customer ratings & reviews
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Showing 1-2 of 2 reviews
Verified Purchase
The best fuel injector cleaner.
I use this in every tank of gas. I preferred the old SL-1 that was much more concentrated for the same price. One bottle would treat four or five tanks of gas.
Verified Purchase
Great fuel system cleaner.
This product is one of the few that has a very good detergent additive, would recommend periodic use to keep the fuel system in good shape.


