CleanSpark is a 100% MADE IN ITALY created and distributed directly by Lubrificanti Speciali s.a.s. The main applications are following listed: Reduction of fuel consumption. Cleaning the entire gasoline supply system and optimization of its operation. Elimination of carbon deposits in the fuel injectors or carburetors. BILLING: Immediately after the Purchase Order please specify whether you want the commercial invoice or cash receipt providing all the data for billing, otherwise it will no longer be possible to issue tax document.