Carlube Diesel Treatment has been specially formulated to ensure maximum fuel system efficiency in all Diesel engines with or without a turbo charger. With untreated fuel, dirt and deposits can build up in the injectors, inlet ports and valves which reduce engine performance and lead to increased fuel consumption and exhaust emissions. Key Features: Cleans fuel system, reduces emissions, and improves fuel economy Maintains inlet valve and injector cleanliness Reduces smoke emissions and protects against fuel system corrosion Suitable for use with turbo chargers and catalytic converters Application: Add the entire contents to a full tank of Diesel. Treats up to 50 litres For best results use regularly. About Carlube It all started in 1988 when Clifford Schofield, the father of cutting compounds, decided to expand Tetrosyl into the lubrication sector with his new brand Carlube. Within just 30 years of trading and a few more products added to The brand, Carlube has grown to become the largest independent oil manufacturer in the UK with all production taking place at our state-of-the-art manufacturing facility in the Northwest of England. Since the launch of Carlubes first product in 1988, our Formula 1 Non-Spec Oil, we have evolved and grown to be capable of producing all the lubricant requirements from standard mineral oils right through to fully synthetic high performance racing oils. Here at Carlube we are prepared to meet ever-changing market demands whilst providing complete protection for the latest high performance and older generation cars, commercial vehicles, motorcycles, agricultural and industrial vehicles, and marine vessels. Within our extensive oil range, we have developed the "R-Flow" and "R-Grip" bottle designs that boast a unique air-flow system ensuring a glug free pour into the tank whilst allowing maximum grip when handling