Bardahl Diesel Injector Cleaner SpecificationsBardahl Diesel Injector Cleaner acts on the entire injection system: injectors pump valves combustion chamber. It restores engine performance prevents over-consumption of fuel and limits exhaust emissions. Particularly effective this cleaner is also very safe as it contains no molecules that are corrosive to engine parts. Packaged in a 1L bottle with 300 ml free this product is compatible with vehicles fitted with a particulate filter.How to use: Wait for the low fuel light to come on. Pour the contents of the bottle into the tank then add 35 litres of fuel. Drive normally until you have used up the treated fuel in one or more trips then refuel normally.