Archoil AR6700-D Complete Diesel Cleaner -DPF EGR Turbo CAT Treatment 250ml

Archoil AR6700-D is a complete diesel cleaner engineered to clean, protect, and maintain the entire diesel fuel system in a single tank treatment. The 250ml bottle treats a full tank of diesel (minimum 40 litres), delivering multi-action cleaning and protection from injectors through to the exhaust.

Modern diesel engines accumulate carbon deposits over time, particularly from short journeys, stop-start driving, and ultra-low sulphur diesel. These deposits build up in the fuel injectors, combustion chamber, turbo, DPF, EGR valve, and catalytic converter, leading to reduced performance, increased fuel consumption, rough running, and rising exhaust emissions. Left unaddressed, these deposits can trigger warning lights and MOT failures.

AR6700-D addresses these problems with a multi-action formula that combines fuel system detergent, carbon cleaner, combustion catalyst, and fuel system lubricant. It removes deposits from fuel injectors and the combustion chamber, cleans and protects the DPF, turbo, and catalytic converter, helps maintain correct EGR valve function, and lubricates precision fuel system components against wear from low-lubricity modern diesel fuels.

Designed for regular use every 5,000 miles, AR6700-D keeps the entire diesel system clean and protected between services. It reduces harmful exhaust emissions and particulates, helps maintain fuel economy, and keeps the engine running smoothly. A practical choice for pre-MOT maintenance and ongoing vehicle care.

Suitable for all diesel engines including modern common rail, older indirect injection, commercial vehicles, and agricultural machinery. Pour the full contents into the fuel tank before refuelling using the included pour spout, which fits standard filler necks including anti-misfuel protectors. For heavily fouled systems requiring an intensive deep clean, use Archoil AR6400-D MAX Pro first, then maintain with AR6700-D every 5,000 miles. Developed and manufactured in the UK; trusted by professional mechanics for over a decade.