Si-1 is a concentrated package of the most powerful high-temperature detergents available. So powerful, SI-1 can clean injectors to nearly 100% efficiency in one treatment. The cleansing effect on injector deposits can raise fuel economy approximately 12% or even greater. SI-1 also protects the fuel system from rust. One bottle treats up to 100 gallons of fuel. Safe for continual use.

MSRP $108.47 Your Price: $84.23 On Sale: $75.81 Quantity: