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.

The S1 also contains detergents and a synthetic upper cylinder lubricant which will help clean pollution control valves and can reduce octane requirements by two numbers. SI-1 also protects the fuel system from rust.

Use one bottle with a full tank or use in smaller doses for continued maintenance, as SI-1 treats up to 100 gallons. This product is safe for continual use.

Sold individually in a 15-ounce bottle.