Engine, AFC-705 Ultra Premium Fuel Additive has been developed to reduce the amount of harmful gases produced by combustion. The additive is formulated to prevent the formation of carbon deposits in the fuel and prolongs its life. It can also be used as a pre-treatment agent for diesel engines. Notably, it was approved by the National Institute of Standards (NIST) in 2015. Further, the additive has been tested on diesel engines.