BIZOL Diesel Power Boost can be used in several ways. 1. Directly via fuel line. Disconnect the fuel supply and return lines and insert them into the system cleaner can. Start the engine and run it at different speeds for approximately 20 minutes. Switch off the engine before the can is empty, reconnect the fuel lines and check for leaks. 2. With the fuel filter. At each service, fill the fuel filter housing with the additive and pour the rest of the contents of the can into the fuel tank. 3. Pour into the fuel tank. Pour into the fuel tank at each service, ensuring that the tank is at least 1/3 full — one 500 ml can is sufficient for up to 70 litres of fuel.